Super duper hype fast FET driver?

[krw@att.bizzzzzzzzzzzz]

On Mon, 22 Aug 2011 18:02:24 -0700, Joerg <invalid@invalid.invalid> wrote:

krw@att.bizzzzzzzzzzzz wrote:
On Mon, 22 Aug 2011 07:14:42 -0700, Joerg <invalid@invalid.invalid> wrote:

krw@att.bizzzzzzzzzzzz wrote:


[...]

For SPI and particularly I2C, I'd really like to see both the analog and data
domains, particularly for triggering.

Well yeah, but sometimes if you want more and more features it gets more
expensive and then da boss says no. I'd rather have a simpler scope than
no scope at all. Some of the newer baseline models have a feature or an
option for purchase that adds 4-16 digital inputs for logic analysis. I
never felt the urge since I have a logic analyzer. That has a trigger
output for the scope but I haven't needed that in years.

I've found that if I buy a crappy tool, I'll always have a crappy tool. I
don't do that anymore. I even bought a Festool today. ;-) But I'm certainly
not buying the boss a scope.


Test drive one of those Taiwanese/Chinese scopes. You may be in for a
real surprise. The handbook of mine is rather skimpy, like with most
Asian electronics products. The first few weeks I discovered a new
feature almost daily. Especially in all those codes that it understands
for remote control.

I did. The techs in production have them. Eeek!

 

[John Larkin]

On Mon, 22 Aug 2011 19:48:05 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 22 Aug 2011 17:23:49 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 22 Aug 2011 19:03:39 -0500, John Fields
jfields@austininstruments.com> wrote:

On Mon, 22 Aug 2011 16:48:40 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:


I was thinking, some years ago, about stacking cmos gates to get more
voltage swing. Imagine, say, one 74ACT240 type buffer, all 8 sections
in parallel, driving the ground pin of a second one.

---
And how did it work out in real life?

Thinking? Works great.

---
Yeah, sure.

Nice dodge, but did you ever do, in the real world, what needed to be
done to prove that your stacking idea was right?

Why are you so threatened by kicking ideas around? This is a
discussion group, and you seem to want certainty about everything.

Ideas happen when people brainstorm. Ideas are killed by wet blanket
carping.

I can't possibly breadboard all the ideas I have; I have too many of
them. I mostly build them when I actually need them, or sometimes just
for fun, but only if they are supercool.

The stacked ACT buffer thing would probably need a PC board to test
properly, and that's a lot of time and cost for an idea without a
serious, immediate need.

Joerg may have such a need. So I suggested the idea.

We did recently breadboard and test using octal ACTs as output
drivers, and that's going into two products.

John

 

[John Larkin]

On Mon, 22 Aug 2011 17:55:48 -0700, Joerg <invalid@invalid.invalid>
wrote:

John Larkin wrote:
On Mon, 22 Aug 2011 17:04:19 -0700, Joerg <invalid@invalid.invalid
wrote:

John Larkin wrote:
On Mon, 22 Aug 2011 14:20:32 -0700, Joerg <invalid@invalid.invalid
wrote:

dagmargoodboat@yahoo.com wrote:
[...]

It's still better to not saturate them. Even a simple b-c schottky
makes a world of difference. I think I drove my test samples with
74ACxx logic, series resistor, || a few pF, Vdd=+5v.

74AC is too slow for my case. How did you keep it out of saturation? The
old Schottky Baker clamp usually doesn't work on those. A two-diode
Baker makes it all sluggish, too much total inductance in the drive.
A 74ACT octal buffer makes a damned fine high-speed output driver or
fet gate driver. Use 4 or better all 8 sections in parallel.

Can it rival the NL37 series? The advantage would be that those come in
octals. In the old days I have sometimes soldered several on top of each
other but only in experiments. I know that was naughty but it did drive
the big pulser (the super expensive lab grade driver box had croaked).
It was 74AC though.

They are almost as fast as NL37s, sub-ns, but have the advantage that
they are "ttl" compatible. If you power an NL from, say, 6.5 volts and
drive the input from 3.3 or even 5 volt logic, they can really get
hot.

Plus, you get 8 in a can.


Ok, that almost sounds like a deal. Being a bit slower can be made up by
more drive gusto. Eight means more amps than three. Just like the old
muscle car wisdom, cubic inches cannot be replaced by anthing, except by
more cubic-inches

"Nothing displaces displacement"

or, as the bikers say,

"74 cubes is 74 cubes."


John

 

On Aug 22, 7:53 pm, Joerg <inva...@invalid.invalid> wrote:

dagmargoodb...@yahoo.com wrote:
On Aug 22, 6:10 pm, Joerg <inva...@invalid.invalid> wrote:

In my case Miller might not be too bad because I only need to swing 12V
or so.

Your first post said capacitive load.  Can you charge the load with
one transistor, let it float, then drive it down with a 2nd
transistor?  Or does the output have to be hard the whole time?

              +12v
                |
                |
            ||--'   Q1
 >----------||    2n7002
            ||>-.
                |
                |
                +--------
                |
                |
            ||--'   Q2
 >----------||    2n7002
            ||>-.
                |
               ==
Q1 could be bootstrapped, or fed a separate non-overlapping drive,
or....  There are lots of possibilities that are 1nS fast, but we
don't know your parameters.

First-cut, LTSpice predicts 1.2nS fall time, as is.

That's what I am doing right now, using N-channels for both directions.
But the drive is iffy, there is only one digital signal available.

That's all right, just split it up and make two (if timing permits).

Only the edge-timing matters, right?

The
capacitive load needs to be held hard only when the bottom FET conducts.
I'd have to make the upper drive signal and that's not easy because the
high time can be controlled in a rather wide range.

Which SPICE model 2N7002 did you use? The Vishay one conked out on me
every time I went to 4V drive or higher.

Fairchild, NDC7002N.

--James

 

[Bill Sloman]

On Aug 23, 7:04 am, John Larkin
<jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

On Sun, 21 Aug 2011 16:31:33 -0700 (PDT),BillSloman



bill.slo...@ieee.org> wrote:
On Aug 22, 1:55 am, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Sat, 20 Aug 2011 22:39:06 -0700 (PDT),BillSloman

bill.slo...@ieee.org> wrote:
On Aug 21, 12:13 pm, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Sat, 20 Aug 2011 18:27:00 -0700 (PDT),BillSloman

bill.slo...@ieee.org> wrote:
On Aug 21, 9:52 am, Joerg <inva...@invalid.invalid> wrote:
BillSlomanwrote:
On Aug 21, 12:17 am, Joerg <inva...@invalid.invalid> wrote:
BillSlomanwrote:
On 20/08/2011 3:34 AM, Joerg wrote:
BillSlomanwrote:
On 20/08/2011 2:46 AM, Joerg wrote:

snip

143 lines of pompous bilge, none on the subject of fet drivers.

John Larkin loves posting about fet drivers - he can make implausible
claims about how fast and cheap his are, and pose as the expert
electronic engineer that he wants to be accepted as.

You think I faked the waveforms? Or the company? Or the awards?

I'm not arguing that you aren't an expert electronic engineer, merely
commenting on your persistent need to be *seen* as an expert
electronic engineer, designing "insanely good" circuits.

Did I say "insanely good" ?

Not recently. But it did stick in my memory.

The point is that we're talking about fet drivers, and you are
arguing.

The point is that Joerg had split the thread by ruminating about an
even more remote rural location, and I reacted to that. There's
nothing immoral about splitting a thread, even if it does take the
subject away from an area where you can - legitimately - present
yourself as an expert and boost your fragile self-image.

--
Bill Sloman, Nijmegen

 

[Bill Sloman]

On Aug 23, 12:18 am, Phil Hobbs
<pcdhSpamMeSensel...@electrooptical.net> wrote:

On 08/22/2011 01:50 AM, Clifford Heath wrote:

On 08/22/11 15:24, Phil Hobbs wrote:
Far from true.

Whhooooosh. So far over your head, you've got no idea there's even a
place where such ideas could exist. BTDT.

BTW, I have nothing against any individual, and respect you and Joerg
more highly than almost anyone else here. Just don't get the impression
that means I think you're right . I merely believe Jeremiah, that "The
human heart is more deceitful than all else". It's incredibly difficult
to clearly see and understand the things we can see or interact with
physically, and impossible for things we can't - about those we can only
have opinions. And luckily, that doesn't even matter much, and certainly
doesn't impede our ability to lead an ethical and productive life.

Knowledge of God is primarily knowledge by acquaintance, like your
knowledge of your mom.  God wants everyone to know Him like that--it's a
love relationship with a real Person, not a set of propositions, and
it's available to you just as much as to me or anyone else.  God is
beautiful beyond all earthly beauty.

Unfortunately, the alternative explanation of religious experience is
that the God you are acquainted with is a sub-set of your own personal
intellectual apparatus.

From a scientific point of view, this is a sufficient explanation of
what is going on. Parapsychology involves the scientific exploration
of whether there could be anything else going on, and so far the
answer is that there's no persuasive evidence for anything else.

Christianity considered as a philosophical system is entirely consistent
with honestly conducted science, and in fact theism avoids some inherent
contradictions in the mechanistic world view.(*)  Thomas Aquinas
insisted that there is only one kind of truth, i.e. all true statements
hold up to honest inquiry from any angle whatever.  Emphasis on "honest".

Silly Christians certainly exist--the 144-hour creation folks for
instance--and so do scientists who use their prestige in their own
fields to make pronunciamentos in areas far from their expertise.  But
the latter isn't science, and the former isn't Christianity, and both
are destructive.

The way unforgiveness eats people up isn't theology, though, it's a
matter of common observation.

Agreed.

--
Bill Sloman, Nijmegen

 

On Aug 22, 6:10 pm, Joerg <inva...@invalid.invalid> wrote:

In my case Miller might not be too bad because I only need to swing 12V
or so.

Your first post said capacitive load. Can you charge the load with
one transistor, let it float, then drive it down with a 2nd
transistor? Or does the output have to be hard the whole time?


+12v
|
|
||--' Q1

----------|| 2n7002
||>-.

|
|
+-------->
|
|
||--' Q2

----------|| 2n7002
||>-.

|
==

Q1 could be bootstrapped, or fed a separate non-overlapping drive,
or.... There are lots of possibilities that are 1nS fast, but we
don't know your parameters.

First-cut, LTSpice predicts 1.2nS fall time, as is.

--
Cheers,
James Arthur

 

[Joerg]

dagmargoodboat@yahoo.com wrote:

On Aug 22, 7:53 pm, Joerg <inva...@invalid.invalid> wrote:
dagmargoodb...@yahoo.com wrote:
On Aug 22, 6:10 pm, Joerg <inva...@invalid.invalid> wrote:
In my case Miller might not be too bad because I only need to swing 12V
or so.
Your first post said capacitive load. Can you charge the load with
one transistor, let it float, then drive it down with a 2nd
transistor? Or does the output have to be hard the whole time?
+12v
|
|
||--' Q1
----------|| 2n7002
||>-.
|
|
+--------
|
|
||--' Q2
----------|| 2n7002
||>-.
|
===
Q1 could be bootstrapped, or fed a separate non-overlapping drive,
or.... There are lots of possibilities that are 1nS fast, but we
don't know your parameters.
First-cut, LTSpice predicts 1.2nS fall time, as is.
That's what I am doing right now, using N-channels for both directions.
But the drive is iffy, there is only one digital signal available.

That's all right, just split it up and make two (if timing permits).

Only the edge-timing matters, right?

For one of them, sort of. I'll have to deal with droop but I'll get
around that somehow. This is where good old LC networks come in and
everyone in the design review goes "Eeuw!"

The
capacitive load needs to be held hard only when the bottom FET conducts.
I'd have to make the upper drive signal and that's not easy because the
high time can be controlled in a rather wide range.

Which SPICE model 2N7002 did you use? The Vishay one conked out on me
every time I went to 4V drive or higher.

Fairchild, NDC7002N.

Thanks, will try that tomorrow. Also Jim's suggestion about Supertex.
For some reason only Arrow has Supertex but no stock. But they've got a
whopping 291,000 of the NDC7002. That's a lotta reels. So I'll try
Fairchild first because we have to be able to by it.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Jim Thompson]

On Mon, 22 Aug 2011 18:38:21 -0700, Joerg <invalid@invalid.invalid> wrote:

dagmargoodboat@yahoo.com wrote:
On Aug 22, 7:53 pm, Joerg <inva...@invalid.invalid> wrote:
dagmargoodb...@yahoo.com wrote:
On Aug 22, 6:10 pm, Joerg <inva...@invalid.invalid> wrote:
In my case Miller might not be too bad because I only need to swing 12V
or so.
Your first post said capacitive load. Can you charge the load with
one transistor, let it float, then drive it down with a 2nd
transistor? Or does the output have to be hard the whole time?
+12v
|
|
||--' Q1
----------|| 2n7002
||>-.
|
|
+--------
|
|
||--' Q2
----------|| 2n7002
||>-.
|
===
Q1 could be bootstrapped, or fed a separate non-overlapping drive,
or.... There are lots of possibilities that are 1nS fast, but we
don't know your parameters.
First-cut, LTSpice predicts 1.2nS fall time, as is.
That's what I am doing right now, using N-channels for both directions.
But the drive is iffy, there is only one digital signal available.

That's all right, just split it up and make two (if timing permits).

Only the edge-timing matters, right?


For one of them, sort of. I'll have to deal with droop but I'll get
around that somehow. This is where good old LC networks come in and
everyone in the design review goes "Eeuw!"


The
capacitive load needs to be held hard only when the bottom FET conducts.
I'd have to make the upper drive signal and that's not easy because the
high time can be controlled in a rather wide range.

Which SPICE model 2N7002 did you use? The Vishay one conked out on me
every time I went to 4V drive or higher.

Fairchild, NDC7002N.


Thanks, will try that tomorrow. Also Jim's suggestion about Supertex.
For some reason only Arrow has Supertex but no stock. But they've got a
whopping 291,000 of the NDC7002. That's a lotta reels. So I'll try
Fairchild first because we have to be able to by it.

Supertex MODEL was best... probably models all brands equally well.

...Jim Thompson

[On the Road, in New York]
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Vladimir Vassilevsky]

Phil Hobbs wrote:

On 08/22/2011 03:51 PM, Vladimir Vassilevsky wrote:



Phil Hobbs wrote:

On 08/22/2011 01:49 PM, Vladimir Vassilevsky wrote:



Phil Hobbs wrote:


Knowledge of God is primarily knowledge by acquaintance, like your
knowledge of your mom.

A religion is a form of schizophrenia. Religions which are stable and
taking their course in a mild manner are publicly admissible.

Or else what? You're proposing converting us to atheism by force?
What exactly _did_ you mean if not that?

I am against forcing anybody into anything as it won't change anything.
Even a successfull conversion to ateism can't help the case of
schizophrenia; it is likely to make it worse.

VLV

 

[Joerg]

dagmargoodboat@yahoo.com wrote:

On Aug 22, 8:16 pm, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

We did recently breadboard and test using octal ACTs as output
drivers, and that's going into two products.

John

I did that waayyy back. It's pretty impressive. One of the last
bipolar variants (ABT?) (AS?) had a faster falling edge, but the pull
up was absolutely pitiful.

I think it was an ABT that we blew when we bootstrapped the ground of
one device onto the tied outputs of another ... *POP* ... and a stench
wafted through the lab.

I wonder if Joerg's whole ckt could be a bridged array of ACT244's,
driving the load?

Unfortunately not :-(

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Joerg]

Jim Thompson wrote:

On Mon, 22 Aug 2011 18:38:21 -0700, Joerg <invalid@invalid.invalid> wrote:

dagmargoodboat@yahoo.com wrote:
On Aug 22, 7:53 pm, Joerg <inva...@invalid.invalid> wrote:

[...]

The
capacitive load needs to be held hard only when the bottom FET conducts.
I'd have to make the upper drive signal and that's not easy because the
high time can be controlled in a rather wide range.

Which SPICE model 2N7002 did you use? The Vishay one conked out on me
every time I went to 4V drive or higher.
Fairchild, NDC7002N.

Thanks, will try that tomorrow. Also Jim's suggestion about Supertex.
For some reason only Arrow has Supertex but no stock. But they've got a
whopping 291,000 of the NDC7002. That's a lotta reels. So I'll try
Fairchild first because we have to be able to by it.

Supertex MODEL was best... probably models all brands equally well.

Ok, probably I'll try that tomorrow. Got the Fairchild model, which is
nice because it's for the tiny SSOT-6 package. They require a form sheet
request but the sender is a robot so I had it in 20sec.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Joerg]

Bill Sloman wrote:

On Aug 23, 7:06 am, Joerg <inva...@invalid.invalid> wrote:
langw...@fonz.dk wrote:
On 22 Aug., 21:58, Joerg <inva...@invalid.invalid> wrote:
langw...@fonz.dk wrote:

[...]

at least it is legal and regulated, so there's hope those who work
there
do it of their own free will
just like drugs prostitution won't go aways just because you ban it,
it
just means criminals will make money providing it, with no regulation
what so ever
Oh yeah, if we give up fighting it we just make it legal. Sorry, but you
will not convince me of that. I have lived in the Netherlands for about
6 years and seen the sad aftermath of that. Including some funerals.
do you think a ban would fix that?
Yes. I have lived in countries with bans and without. With bans there
were less people who fried their brains via drugs and less drug-related
funerals. I prefer that.

It's a popular delusion that bans work. But restrictive France has a
bigger problem with drugs than the not-all-that permissive
Netherlands.

What I have observed is different.

http://en.wikipedia.org/wiki/Drug_policy_of_the_Netherlands

Quote "The drug policy of the Netherlands is marked by its
distinguishing between so called "soft" and "hard drugs"."

And that's exactly the problem. Dealers want to make money so they mix a
teaser drug into soft drugs and ... kaboom, brain's almost fried. This
is how a guy whom I knew died. Several others are permanently mentally
disabled, and very seriously.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[John Larkin]

On Mon, 22 Aug 2011 17:55:48 -0700, Joerg <invalid@invalid.invalid>
wrote:

John Larkin wrote:
On Mon, 22 Aug 2011 17:04:19 -0700, Joerg <invalid@invalid.invalid
wrote:

John Larkin wrote:
On Mon, 22 Aug 2011 14:20:32 -0700, Joerg <invalid@invalid.invalid
wrote:

dagmargoodboat@yahoo.com wrote:
[...]

It's still better to not saturate them. Even a simple b-c schottky
makes a world of difference. I think I drove my test samples with
74ACxx logic, series resistor, || a few pF, Vdd=+5v.

74AC is too slow for my case. How did you keep it out of saturation? The
old Schottky Baker clamp usually doesn't work on those. A two-diode
Baker makes it all sluggish, too much total inductance in the drive.
A 74ACT octal buffer makes a damned fine high-speed output driver or
fet gate driver. Use 4 or better all 8 sections in parallel.

Can it rival the NL37 series? The advantage would be that those come in
octals. In the old days I have sometimes soldered several on top of each
other but only in experiments. I know that was naughty but it did drive
the big pulser (the super expensive lab grade driver box had croaked).
It was 74AC though.

They are almost as fast as NL37s, sub-ns, but have the advantage that
they are "ttl" compatible. If you power an NL from, say, 6.5 volts and
drive the input from 3.3 or even 5 volt logic, they can really get
hot.

Plus, you get 8 in a can.


Ok, that almost sounds like a deal. Being a bit slower can be made up by
more drive gusto. Eight means more amps than three. Just like the old
muscle car wisdom, cubic inches cannot be replaced by anthing, except by
more cubic-inches

Hey Joerg,

Can you apply steps to opposite sides of the capacitive load? +6 step
on one side, -6 on the other. Make those from a mess of ACTs or Tiny
Logic chips. Maybe a little inductive peaking to spice things up.

Double the voltage! Cheap!

John

 

[Joerg]

Bill Sloman wrote:

On Aug 23, 5:58 am, Joerg <inva...@invalid.invalid> wrote:
langw...@fonz.dk wrote:
On 22 Aug., 20:07, Joerg <inva...@invalid.invalid> wrote:
Nico Coesel wrote:
Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net> wrote:
On 08/22/2011 11:08 AM, Nico Coesel wrote:
Phil Hobbs<pcdhSpamMeSensel...@electrooptical.net> wrote:
On 08/22/2011 01:03 AM, Clifford Heath wrote:
On 08/22/11 06:45, Joerg wrote:
I won't judge anyone who does that, that's not up to me. Personally I
would not do it because it is squarely against biblical teaching, and I
try to live by that.
Would that be the biblical teaching in favor of genocide, or witch-burning?
What you think is Christian is predominantly the interpretation and
ideology
of your chosen cultural group, with some ideas drawn from another stone-age
group; neither of which is informed by rational inquiry or material
realities.
Far from it. Properly, the Church is organized so that no one is
without supervision, precisely because all of us, ministers and laity
Keep on dreaming. Over here in NL and in Belgium there is a big
scandal going on concerning pedophiles in the church. There are dozens
of victims!
And its not limited to NL and Belgium:
http://www.thefreelibrary.com/HOUSE+OF+HORROR%3B+100+set+to+sue+over+...
http://www.scribd.com/doc/53545205/Torture-Assassinations-Vaccine-Tri...
Right now its dinner time over here but I suddenly lost my appetite!
I'd certainly have had to be asleep to miss it, especially since it came
out in 2002 in the US. Nor is it limited to the Church--schoolteachers,
for instance, have a far worse record, at least over here.
As a Dutchman, if you really want something to turn your stomach, try
investigating the origins of all those trafficked slave women in the red
light district of Amsterdam. IIRC about 4 out of 5 were trafficked from
Russia and eastern Europe, and they suffer rape and worse, continually,
until they're too sick or too worn out to be worth anything any more.
Well, if you want to see unhappy women you should go to the red-light
district. However, your information is a bit outdated. Many laws and
regulations have been put in effect to minimize the possibility of
human trafficking and enslavement. It is very difficult to get a
permit to open a sex-club (aka massage salon). Even the well known
Yab-Yum has been closed down by the local authorities because there
where rumours the owners had ties with the criminal circuit.
Outdated? From what I have heard they have discovered a new source of
"revenue" and are now taxing the redlight districts:
http://www.breitbart.com/article.php?id=D9KMSBS81&show_article=1
it's a job/business, why shouldn't they pay tax like everyone else?
So we look the other way when the question regarding the residency
permit comes up?

Being a "sex worker" is a legitimate job in the Netherlands, and
people coming from those eastern European countries that are now part
of the recently extended European Union don't need any kind of
residency permit anyway.

You still need the Vergunning to Verblijf, just like I did. That's what
a Dutch couple that was here three weeks ago told me. They know that for
a fact because one of them is from the EU but not a Dutch citizen.

at least it is legal and regulated, so there's hope those who work
there do it of their own free will
just like drugs prostitution won't go aways just because you ban it,
it just means criminals will make money providing it, with no
regulation what so ever.
Oh yeah, if we give up fighting it we just make it legal. Sorry, but you
will not convince me of that. I have lived in the Netherlands for about
6 years and seen the sad aftermath of that. Including some funerals.

Make it legal and regulate the hell out of it. The Dutch don't yet
inspect brothels as aggressively as they now inspect fire-works depots
and chemical plants ... the risk of spreading sexually transmitted
diseases worries the neighbours less than the risk of loud explosions
or clouds of poisonous gas.

Prostitution, drugs, alcohol, tobacco and abortion are all services/
products that get provided whether or not they are legally permitted.
Banning them is just political posturing.

Abortion is a service? You've got to be kidding. To me that's murder for
hire.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Bill Sloman]

On Aug 23, 5:58 am, Joerg <inva...@invalid.invalid> wrote:

langw...@fonz.dk wrote:
On 22 Aug., 20:07, Joerg <inva...@invalid.invalid> wrote:
Nico Coesel wrote:
Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net> wrote:
On 08/22/2011 11:08 AM, Nico Coesel wrote:
Phil Hobbs<pcdhSpamMeSensel...@electrooptical.net>  wrote:
On 08/22/2011 01:03 AM, Clifford Heath wrote:
On 08/22/11 06:45, Joerg wrote:
I won't judge anyone who does that, that's not up to me. Personally I
would not do it because it is squarely against biblical teaching, and I
try to live by that.
Would that be the biblical teaching in favor of genocide, or witch-burning?
What you think is Christian is predominantly the interpretation and
ideology
of your chosen cultural group, with some ideas drawn from another stone-age
group; neither of which is informed by rational inquiry or material
realities.
Far from it.  Properly, the Church is organized so that no one is
without supervision, precisely because all of us, ministers and laity
Keep on dreaming. Over here in NL and in Belgium there is a big
scandal going on concerning pedophiles in the church. There are dozens
of victims!
And its not limited to NL and Belgium:
http://www.thefreelibrary.com/HOUSE+OF+HORROR%3B+100+set+to+sue+over+...
http://www.scribd.com/doc/53545205/Torture-Assassinations-Vaccine-Tri...
Right now its dinner time over here but I suddenly lost my appetite!
I'd certainly have had to be asleep to miss it, especially since it came
out in 2002 in the US.  Nor is it limited to the Church--schoolteachers,
for instance, have a far worse record, at least over here.
As a Dutchman, if you really want something to turn your stomach, try
investigating the origins of all those trafficked slave women in the red
light district of Amsterdam.  IIRC about 4 out of 5 were trafficked from
Russia and eastern Europe, and they suffer rape and worse, continually,
until they're too sick or too worn out to be worth anything any more..
Well, if you want to see unhappy women you should go to the red-light
district. However, your information is a bit outdated. Many laws and
regulations have been put in effect to minimize the possibility of
human trafficking and enslavement. It is very difficult to get a
permit to open a sex-club (aka massage salon). Even the well known
Yab-Yum has been closed down by the local authorities because there
where rumours the owners had ties with the criminal circuit.
Outdated? From what I have heard they have discovered a new source of
"revenue" and are now taxing the redlight districts:

http://www.breitbart.com/article.php?id=D9KMSBS81&show_article=1

it's a job/business, why shouldn't they pay tax like everyone else?

So we look the other way when the question regarding the residency
permit comes up?

Being a "sex worker" is a legitimate job in the Netherlands, and
people coming from those eastern European countries that are now part
of the recently extended European Union don't need any kind of
residency permit anyway.

at least it is legal and regulated, so there's hope those who work
there do it of their own free will

just like drugs prostitution won't go aways just because you ban it,
it just means criminals will make money providing it, with no
regulation what so ever.

Oh yeah, if we give up fighting it we just make it legal. Sorry, but you
will not convince me of that. I have lived in the Netherlands for about
6 years and seen the sad aftermath of that. Including some funerals.

Make it legal and regulate the hell out of it. The Dutch don't yet
inspect brothels as aggressively as they now inspect fire-works depots
and chemical plants ... the risk of spreading sexually transmitted
diseases worries the neighbours less than the risk of loud explosions
or clouds of poisonous gas.

Prostitution, drugs, alcohol, tobacco and abortion are all services/
products that get provided whether or not they are legally permitted.
Banning them is just political posturing.

--
Bill Sloman, Nijmegen

 

[Joerg]

Nico Coesel wrote:

Joerg <invalid@invalid.invalid> wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

Nico Coesel wrote:
Joerg <invalid@invalid.invalid> wrote:

Bill Sloman wrote:
It's not your foundations that I'm worried about, it's the foundations
of the science that you - indirectly - rely on to make your money. If
your sub-contradtors were to reject experimental evidence because they
thought that the results didn't fit with their - say, anti-abortion -
theology you could eventually find yourself in serious trouble with
the FDA.

For the record, I am against abortion and if someone wanted me to work
on some device that is used in that area I will refuse. It is my right
to do so.
Perhaps, but given a certain situation you may choose different. There
are many grey areas when it comes to these sort of decisions. The
bottom line is that you are in no position to choose what is best for
someone else.

I didn't say that. I said I am personally against it. So, naturally, I
wish my tax Dollars not be used for that either. If someone commits a
sin it is not up to me to judge them but it is up to me not to support
that. Just like I do not support free drug use.
I wish the neighbours would think the same They are on holiday and
from the smell it seems their kids smoke a kilo of pot each day.

Watch out for them. One day "friends" will come over and bring some
other stuff. "Hey, try this, gives you a much better buzz". From there
it'll all be downhill, and fast.

I think they already kicked that sort of friends out

Obviously there are plenty of them left:

http://www.cbs6albany.com/articles/amsterdam-1285760-police-raid.html

Maybe their parents are not competent enough? It's sad. Reason I brought
it up and will never be for free drug use are all tthe stuff I witnessed
while living in the Netherlands. People whove fried their brains out and
all that. But the worst was the son of a woman in her 50's. One day she
got the call, that they found his bloated body in a canal in Amsterdam.

Well, if I see how American teenagers behave at places like Fort
Lauderdale... I doubt things are much different. I'm sure it is
possible to buy any kind of drugs no matter where you are.

That's what a classmate in Germany thought as well. Wrong. He did some
time for that.

Of course there will always be triage type situations where there are
only two choices, between the yet unborn's survival and the mother's
survival. That's very different. What I meant was "doing it" and then,
whoops, "got to get rid of it". That is a grave sin.
I believe that labeling things as a sin usually ends up making the
wrong choices by not considering the circumstances. One of my former
teachers (a former priest) had an interesting example. One of his
parishioners had been living with his sister all his life. He was
afraid that he would not go to heaven because of that. My former
teacher told him that this sin would be forgiven because its not THAT
serious. His motivation was simple: true love between two adults can
never be wrong.
He should read the bible again. It clearly spells out what is sin and
what isn't. And that we have forgiveness if only we ask for it. Yup,
also for the gal who had an abortion done years ago. But that doesn't
mean it wasn't a sin.

Well, a lot is a matter of interpretation. But you should be aware
that NL priests are also very progressive and do not always follow the
rules set by Rome. There will never be a 'Dutch' pope

Renegade priests?

The real problem is ofcourse that the ofspring from a brother and
sister is prone to genetic defects. Much practical knowledge from
ancient times has been embedded as rules in religion. Like the Moslims
not eating pork and demand animals to be killed without being sedated.
Very few seem to wonder whether these rules still have value in a
modern society where food hygiene is way better.
That is because they do not properly recognize Jesus and the New Testament.

To me different religion = different set of rules.

For me there is only one

[...]

his group in case the Nazis would catch and torture them. He refused to
carry a cyanide pill.

Well, some people kill themselves for less. Someone I used to know had
everything going well for him. He was about to get married, started to
get his life back together and he still found it necessary to step in
front of a train after taking sleeping pills didn't work. Everyone has
his/her own limit.

Out here we had a very similar case, he shot himself in the head. It was
the toughest memorial service I ever attended.

Life is what you make of it, but if you have nothing to begin with
then there is no life at all.

You mean abortion with that? Ever looked at an ultrasound before "legal"
abortion deadline? I have, I design part of those machines.
I'm sure the people who set the legal limit looked at all the facts
(and images) and made a well informed decision.
No, they did not. IMHO they condoned murder, plain and simple. "Oh, you
in there, you may have a heartbeat but you are too small so we have
deemed you unworthy of being called a human being". It's sickening.

I agree its a slippery slope and I hope I never have to face such a
decision. I can understand that it is an option for some people. If
there really is no-one to care for the child then maybe its better off
not being born. But that really should be the last option and I doubt
it is really necessary. There are so many couples who cannot have
children of their own or people who are willing to take care of an
extra kid. We actually took care of someone else's child for a while
knowing it could be 'permanent' but in the end it didn't.

We did as well, for a little over a year.

There is an interesting movie on the subject:
http://www.imdb.com/title/tt0467406/

I will never forget when one of our vicars at church, shortly before
heading back for his last year at seminary, told the whole congregation:
"I was the baby that was supposed to be aborted". His mom got pregrant,
everyone pushed her hard to "take care of it". The mom's strong
Christian faith is what literally saved the life of this vicar. He is
now a pastor. Not many eyes stayed dry that morning. That really drove
it home.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Bill Sloman]

On Aug 23, 7:06 am, Joerg <inva...@invalid.invalid> wrote:

langw...@fonz.dk wrote:
On 22 Aug., 21:58, Joerg <inva...@invalid.invalid> wrote:
langw...@fonz.dk wrote:
On 22 Aug., 20:07, Joerg <inva...@invalid.invalid> wrote:
Nico Coesel wrote:
Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net> wrote:
On 08/22/2011 11:08 AM, Nico Coesel wrote:
Phil Hobbs<pcdhSpamMeSensel...@electrooptical.net>  wrote:
On 08/22/2011 01:03 AM, Clifford Heath wrote:
On 08/22/11 06:45, Joerg wrote:
I won't judge anyone who does that, that's not up to me. Personally I
would not do it because it is squarely against biblical teaching, and I
try to live by that.
Would that be the biblical teaching in favor of genocide, or witch-burning?
What you think is Christian is predominantly the interpretation and
ideology
of your chosen cultural group, with some ideas drawn from another stone-age
group; neither of which is informed by rational inquiry or material
realities.
Far from it.  Properly, the Church is organized so that no one is
without supervision, precisely because all of us, ministers and laity
Keep on dreaming. Over here in NL and in Belgium there is a big
scandal going on concerning pedophiles in the church. There are dozens
of victims!
And its not limited to NL and Belgium:
http://www.thefreelibrary.com/HOUSE+OF+HORROR%3B+100+set+to+sue+over+...
http://www.scribd.com/doc/53545205/Torture-Assassinations-Vaccine-Tri...
Right now its dinner time over here but I suddenly lost my appetite!
I'd certainly have had to be asleep to miss it, especially since it came
out in 2002 in the US.  Nor is it limited to the Church--schoolteachers,
for instance, have a far worse record, at least over here.
As a Dutchman, if you really want something to turn your stomach, try
investigating the origins of all those trafficked slave women in the red
light district of Amsterdam.  IIRC about 4 out of 5 were trafficked from
Russia and eastern Europe, and they suffer rape and worse, continually,
until they're too sick or too worn out to be worth anything any more.
Well, if you want to see unhappy women you should go to the red-light
district. However, your information is a bit outdated. Many laws and
regulations have been put in effect to minimize the possibility of
human trafficking and enslavement. It is very difficult to get a
permit to open a sex-club (aka massage salon). Even the well known
Yab-Yum has been closed down by the local authorities because there
where rumours the owners had ties with the criminal circuit.
Outdated? From what I have heard they have discovered a new source of
"revenue" and are now taxing the redlight districts:
http://www.breitbart.com/article.php?id=D9KMSBS81&show_article=1
it's a job/business, why shouldn't they pay tax like everyone else?
So we look the other way when the question regarding the residency
permit comes up?

of course not, why should it be any different than if they were
working
cleaning hotelrooms, picking strawberries or something else? if they
work
they should pay tax and have the permit to live and work in that
country

I have heard they are simply issued some sort of registration pass.

at least it is legal and regulated, so there's hope those who work
there
do it of their own free will
just like drugs prostitution won't go aways just because you ban it,
it
just means criminals will make money providing it, with no regulation
what so ever
Oh yeah, if we give up fighting it we just make it legal. Sorry, but you
will not convince me of that. I have lived in the Netherlands for about
6 years and seen the sad aftermath of that. Including some funerals.

do you think a ban would fix that?

Yes. I have lived in countries with bans and without. With bans there
were less people who fried their brains via drugs and less drug-related
funerals. I prefer that.

It's a popular delusion that bans work. But restrictive France has a
bigger problem with drugs than the not-all-that permissive
Netherlands.

http://en.wikipedia.org/wiki/Drug_policy_of_the_Netherlands

--
Bill Sloman, Nijmegen

 

On Aug 22, 8:16 pm, John Larkin
<jjlar...@highNOTlandTHIStechnologyPART.com> wrote:

We did recently breadboard and test using octal ACTs as output
drivers, and that's going into two products.

John

I did that waayyy back. It's pretty impressive. One of the last
bipolar variants (ABT?) (AS?) had a faster falling edge, but the pull
up was absolutely pitiful.

I wonder if Joerg's whole ckt could be a bridged array of ACT244's,
driving the load?

--
Cheers,
James Arthur

 

[John Larkin]

On Mon, 22 Aug 2011 09:30:16 -0700 (PDT), "langwadt@fonz.dk"
<langwadt@fonz.dk> wrote:

On 22 Aug., 17:38, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
On Mon, 22 Aug 2011 07:14:42 -0700, Joerg <inva...@invalid.invalid
wrote:









k...@att.bizzzzzzzzzzzz wrote:
On Sun, 21 Aug 2011 17:37:08 -0700, Joerg <inva...@invalid.invalid> wrote:

John Larkin wrote:
On Sun, 21 Aug 2011 15:27:05 -0700, Joerg <inva...@invalid.invalid
wrote:

k...@att.bizzzzzzzzzzzz wrote:
On Sun, 21 Aug 2011 13:36:40 -0700, Joerg <inva...@invalid.invalid> wrote:

k...@att.bizzzzzzzzzzzz wrote:
On Sun, 21 Aug 2011 10:09:16 -0700, Joerg <inva...@invalid.invalid> wrote:

[...]

http://www.kexin.com.cn/pdf/KC846S.pdf
No useful specs.

That is normal with many Asian suppliers, got to get used to it and test
a lot for yourself. You can sometimes obtain additional data from them
but sometimes you'd have to be married to the CEO's cousin's daughter or
something like that.
"Test a lot?"  What does that tell me?  It went against my grain to use a
green LED (GaN) at 3.3V.  "Because one works..."  Well, at least if the next
lot doesn't work we'll know.  

I didn't mean a lot as in production lot, but as in "a lot of testing"

Meaning some of the properties have to be measure. In some designs that
is the only way to succeed because there are no parts that can
"formally" do what you need them to do.

http://www.rohm.com/products/discrete/transistor/complex/#03
"Very small package with two transistors."

All those aren't fast though.
Me?  I don't need fast.  ;-)

Lucky you

Almost all my stuff is RF nowadays.
We buy modules for all that stuff.  I wouldn't attempt it with the shoestring
capital budget we're on (we're down a scope and it doesn't appear that they're
going to even replace it).

A scope? That's scary. I hope that doesn't mean any bad news. You can
nowadays get a lotta scope for $1-2k.
Or a Rigol, for $350.

That may be bit skimpy. I often find myself debugging and finding things
on the digital side, where everyone was 110% sure it couldn't possibly
be a software issue. That's mostly SPI and other serial buses where 2ch
won't really work. Also, I found that 100MHz BW ain't enough. Glitches
in systems where a 8051 screams along at 80MHz or so are specterally
above that.

That's been my point when management (and the other engineer) suggest that
100MHz is enough.  Gotta have at least 3X, 5x is better.

No need for 3x or 5x here. I have a 200MHz BW scope with 1GSPS realtime,
cost me about $1800 including tax. If things get any faster then I can
usually make them repetitive, at least on a temporary basis, and fire up
the old HP. That only has a 40MHz converter but a very good one and its
BW is 1GHz.

It's just so weird to see the words "8051 screams along" run together like
that.  ;-)

Like this

http://www.youtube.com/watch?v=pBD0YpdRf4Y

I am not a gigital guy but AFAIK there aren't too many other uCs that
you can clock at 100MHz.

We use an NXP ARM LPC1754, and it can clock at 100 MHz. Since it's a
register-rich 32-bit RISC thing, it really screams. We buy them
programmed with our code and laser marked from Arrow for $4.75 each.

you can even get the lpc1759 that will run at 120MHz, but it has 4x
the
memory so it will cost a bit more

it is impressive how much processing power you can get in a single
chip
that really only need a 3.3V supply and sometimes an xtal


We're also using LPC3250s, which clock at 270 MHz or some such, around
$8.

they need external memory that gets a bit more complicated

-Lasse

This afternoon we first applied power to a laser controller that uses
a 3250. The test LEDs (upper left) came up funny because they are
connected to output-only ports (no tri-state) and various port bits
power up high or low! Turns out that's in the fine print somewhere.

ftp://jjlarkin.lmi.net/T940_first_board.jpg

The good news is that we loaded a never-before-run DRAM test, and it
(and the DRAM!!! and all the power supplies!!!) works!!!

This is only 6 layers; I don't know how The Brat managed to pull that
off.


John