Driver to drive?

[John Larkin]

On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:2rqnd75rhlp6opv164golnl7kq6r5uo49v@4ax.com...
On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax.com...
On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax.com...
On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:

Tinkering with the old Sturmey archer bicycle dynamo, I was
wondering
whether it would charge a 1.2Ah SLA any better if the loading was
modified.

The generator is rated 6V/3W, but off load at a decent rate of knots
it
can
produce over a couple of hundred volts.

What I was wondering was whether its possible to get more energy
into
the
battery by letting the generator output voltage stretch its legs so
to
speak
and convert the excessive voltage down with a buck converter.

Can anyone advise on the practicality of this please?

Thanks.


Bwahahahahaha! So this was the original post? Bwahahahahaha!

...Jim Thompson

Perhaps Larkin would be happy to address Ian's question, "What I was
wondering was whether its possible to get more energy into the battery
by letting the generator output voltage stretch its legs so to speak
and convert the excessive voltage down with a buck converter"?


Well its what I wanted to hear anyway, I might start thinking about a
design
for a buck converter to try it out and see what happens, might be
possible
to get away with a MC34063 - failing that maybe a discrete component
design.

Unfortunately my workshop has been dismantled for refurbishing and most
of
the stuff crammed into the shed - so no room to work in there either.

When I tried LTspice I found it a PITA to use - maybe while deprived of
my
workshop I should give it another chance.


I love LT Spice. It's not hard to use, and well worth the short
learning curve.

Here, try this:


Thanks - might download it tomorrow.


I committed a Great Sin on Friday: I *designed* a circuit by fiddling
with Spice. It's a double-terminated LC filter feeding an opamp driver
diffamp, an ADA4950-1, with an offset generator voltage divider, and
all sorts of entangled loadings. Looking at the algebra, I bailed.
Since I'd probably want to sim it to check any computed (and stocked!)
parts values, why not just Spice it and fiddle?

Having noticed quite a few apps on the LT d/l page, I wondered what
switchercad does?


Switchercad is - I think - just another name for LT Spice.

---
Indeed.

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?

What a weird, foul old hen you are.

John

 

[Jamie]

John Larkin wrote:

On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:


On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:


On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:2rqnd75rhlp6opv164golnl7kq6r5uo49v@4ax.com...

On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax.com...

On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax.com...

On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


Tinkering with the old Sturmey archer bicycle dynamo, I was
wondering
whether it would charge a 1.2Ah SLA any better if the loading was
modified.

The generator is rated 6V/3W, but off load at a decent rate of knots
it
can
produce over a couple of hundred volts.

What I was wondering was whether its possible to get more energy
into
the
battery by letting the generator output voltage stretch its legs so
to
speak
and convert the excessive voltage down with a buck converter.

Can anyone advise on the practicality of this please?

Thanks.


Bwahahahahaha! So this was the original post? Bwahahahahaha!

...Jim Thompson

Perhaps Larkin would be happy to address Ian's question, "What I was
wondering was whether its possible to get more energy into the battery
by letting the generator output voltage stretch its legs so to speak
and convert the excessive voltage down with a buck converter"?


Well its what I wanted to hear anyway, I might start thinking about a
design
for a buck converter to try it out and see what happens, might be
possible
to get away with a MC34063 - failing that maybe a discrete component
design.

Unfortunately my workshop has been dismantled for refurbishing and most
of
the stuff crammed into the shed - so no room to work in there either.

When I tried LTspice I found it a PITA to use - maybe while deprived of
my
workshop I should give it another chance.


I love LT Spice. It's not hard to use, and well worth the short
learning curve.

Here, try this:


Thanks - might download it tomorrow.


I committed a Great Sin on Friday: I *designed* a circuit by fiddling
with Spice. It's a double-terminated LC filter feeding an opamp driver
diffamp, an ADA4950-1, with an offset generator voltage divider, and
all sorts of entangled loadings. Looking at the algebra, I bailed.
Since I'd probably want to sim it to check any computed (and stocked!)
parts values, why not just Spice it and fiddle?

Having noticed quite a few apps on the LT d/l page, I wondered what
switchercad does?


Switchercad is - I think - just another name for LT Spice.

---
Indeed.

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

 

[John Larkin]

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:


On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:


On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:2rqnd75rhlp6opv164golnl7kq6r5uo49v@4ax.com...

On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax.com...

On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax.com...

On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


Tinkering with the old Sturmey archer bicycle dynamo, I was
wondering
whether it would charge a 1.2Ah SLA any better if the loading was
modified.

The generator is rated 6V/3W, but off load at a decent rate of knots
it
can
produce over a couple of hundred volts.

What I was wondering was whether its possible to get more energy
into
the
battery by letting the generator output voltage stretch its legs so
to
speak
and convert the excessive voltage down with a buck converter.

Can anyone advise on the practicality of this please?

Thanks.


Bwahahahahaha! So this was the original post? Bwahahahahaha!

...Jim Thompson

Perhaps Larkin would be happy to address Ian's question, "What I was
wondering was whether its possible to get more energy into the battery
by letting the generator output voltage stretch its legs so to speak
and convert the excessive voltage down with a buck converter"?


Well its what I wanted to hear anyway, I might start thinking about a
design
for a buck converter to try it out and see what happens, might be
possible
to get away with a MC34063 - failing that maybe a discrete component
design.

Unfortunately my workshop has been dismantled for refurbishing and most
of
the stuff crammed into the shed - so no room to work in there either.

When I tried LTspice I found it a PITA to use - maybe while deprived of
my
workshop I should give it another chance.


I love LT Spice. It's not hard to use, and well worth the short
learning curve.

Here, try this:


Thanks - might download it tomorrow.


I committed a Great Sin on Friday: I *designed* a circuit by fiddling
with Spice. It's a double-terminated LC filter feeding an opamp driver
diffamp, an ADA4950-1, with an offset generator voltage divider, and
all sorts of entangled loadings. Looking at the algebra, I bailed.
Since I'd probably want to sim it to check any computed (and stocked!)
parts values, why not just Spice it and fiddle?

Having noticed quite a few apps on the LT d/l page, I wondered what
switchercad does?


Switchercad is - I think - just another name for LT Spice.

---
Indeed.

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

John

 

[Ralph Barone]

On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field"
<gangprobing.al...@ntlworld.com> wrote:

Tinkering with the old Sturmey archer bicycle
dynamo, I was wondering whether it would
charge a 1.2Ah SLA any better if the loading
was modified.

The generator is rated 6V/3W, but off load at a
decent rate of knots it can produce over a
couple of hundred volts.

What I was wondering was whether its possible
to get more energy into the battery by letting the
generator output voltage stretch its legs so to
speak and convert the excessive voltage down
with a buck converter.

Can anyone advise on the practicality of this
please?

Thanks.

It's unfortunately been over 20 years since I've touched power conversion,

so I can't contribute much of a practical basis to this discussion, but
here are my theoretical contributions.

Bike dynamos are designed with "excess" inductance, such that as the
frequency and internal voltage rises with speed, the unit current limits at
approx 0.5 A. A number of people use series capacitors to cancel part of
this inductance in order to get more current out of their dynamos. If you
wanted to extract the maximum possible DC power out of one of these, I
would consider trying the following:
- Since the AC voltage output is low at low speeds, synchronous
rectification should be more efficient than using a diode bridge.
- Due to the high series inductance, I think it makes sense to pull as
close to sinusoidal current from the dynamo, so something resembling a PFC
front end might be useful.
- Tracking the frequency of the incoming AC and using that in the control
seems to be an obvious path to follow.
- Frequency dependent series compensation might be useful, although if the
PFC front end can have an adjustable leading power factor, that might do it
to.

 

[Ian Field]

"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:qspqd79ct0cq825cuoemuli3sgosejlt86@4ax.com...

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:


On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:


On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:2rqnd75rhlp6opv164golnl7kq6r5uo49v@4ax.com...

On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
message
news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax.com...

On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote
in
message
news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax.com...

On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:


On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


Tinkering with the old Sturmey archer bicycle dynamo, I was
wondering
whether it would charge a 1.2Ah SLA any better if the loading
was
modified.

The generator is rated 6V/3W, but off load at a decent rate of
knots
it
can
produce over a couple of hundred volts.

What I was wondering was whether its possible to get more
energy
into
the
battery by letting the generator output voltage stretch its
legs so
to
speak
and convert the excessive voltage down with a buck converter.

Can anyone advise on the practicality of this please?

Thanks.


Bwahahahahaha! So this was the original post? Bwahahahahaha!

...Jim Thompson

Perhaps Larkin would be happy to address Ian's question, "What I
was
wondering was whether its possible to get more energy into the
battery
by letting the generator output voltage stretch its legs so to
speak
and convert the excessive voltage down with a buck converter"?


Well its what I wanted to hear anyway, I might start thinking
about a
design
for a buck converter to try it out and see what happens, might be
possible
to get away with a MC34063 - failing that maybe a discrete
component
design.

Unfortunately my workshop has been dismantled for refurbishing and
most
of
the stuff crammed into the shed - so no room to work in there
either.

When I tried LTspice I found it a PITA to use - maybe while
deprived of
my
workshop I should give it another chance.


I love LT Spice. It's not hard to use, and well worth the short
learning curve.

Here, try this:


Thanks - might download it tomorrow.


I committed a Great Sin on Friday: I *designed* a circuit by fiddling
with Spice. It's a double-terminated LC filter feeding an opamp
driver
diffamp, an ADA4950-1, with an offset generator voltage divider, and
all sorts of entangled loadings. Looking at the algebra, I bailed.
Since I'd probably want to sim it to check any computed (and
stocked!)
parts values, why not just Spice it and fiddle?

Having noticed quite a few apps on the LT d/l page, I wondered what
switchercad does?


Switchercad is - I think - just another name for LT Spice.

---
Indeed.

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

Being insulted by such a creepy weirdo somehow seems rather trivial compared
with being isulted by anyone of any conseqence.

 

[John Fields]

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

--
JF

 

[Jim Thompson]

On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

JL always gets confused... he can't tell the difference between a
querent (an inquirer) and queerants (those cretins who populate SF

...Jim Thompson
--
| 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.

 

[John Fields]

On Tue, 6 Dec 2011 15:50:26 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

Being insulted by such a creepy weirdo somehow seems rather trivial compared
with being isulted by anyone of any conseqence.

---
And yet, instead of ignoring, as one would have done if the insult was
trivial, you chose to respond, in whatever venue.

You're a fraud.


--
JF

 

[John Larkin]

On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

OK, address the alternator question.

John

 

[Jim Thompson]

On Tue, 06 Dec 2011 19:59:02 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Tue, 6 Dec 2011 15:50:26 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:


Being insulted by such a creepy weirdo somehow seems rather trivial compared
with being isulted by anyone of any conseqence.

---
And yet, instead of ignoring, as one would have done if the insult was
trivial, you chose to respond, in whatever venue.

You're a fraud.

I'm trying to sort out who is the pimp and who is the whore: JL <> Ian

...Jim Thompson
--
| 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.

 

[John Fields]

On Tue, 06 Dec 2011 18:17:24 -0800, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

OK, address the alternator question.

---
No, thank you.

--
JF

 

[Ian Field]

"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:35jtd79af8ra89p1861u0jmbltgqsa9rtn@4ax.com...

On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

OK, address the alternator question.

As I've KFd JF it wouldn't be any help to me, in any case I'd be wary of
mischief if he did reply.

 

[Jim Thompson]

On Wed, 07 Dec 2011 09:14:51 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Tue, 06 Dec 2011 18:17:24 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

OK, address the alternator question.

---
No, thank you.

Larkin will never address the "alternator" problem himself. Notice
how he artfully redirected the problem to you without offering one
iota of technical discussion. I really don't know why anyone pays him
any attention at all.

...Jim Thompson
--
| 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.

 

[John Larkin]

On Wed, 7 Dec 2011 15:39:28 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:35jtd79af8ra89p1861u0jmbltgqsa9rtn@4ax.com...
On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
jfields@austininstruments.com> wrote:

On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
jfields@austininstruments.com> wrote:

Aren't you even beginning to be annoyed by the pilot fish who feeds on
your waste and considers you to be his source of chum?


What a weird, foul old hen you are.

John

flattering will get you no where John!

Jamie

He's still obsessed with excrement, too. He mentions it a lot more
than he mentions electronics. Yuk.

---
If I was obsessed with poop I'd reply to _all_ of your posts but, as
it is, I generally prefer to steer away from the threads you infect
and provide useful solutions for querants with problems.

OK, address the alternator question.


As I've KFd JF it wouldn't be any help to me, in any case I'd be wary of
mischief if he did reply.

You're missing nothing.

John

 

[RichD]

On Nov 9, RichD <r_delaney2...@yahoo.com> wrote:

McCarthy was also one of those responsible for the original
'thinking machines' hype; "we'll have electronic brains
any day now".  And it succeeded - federal $$$ poured
in to the computer engineers at the big research
schools, as MIT, Stanford et al. became branches of
the Pentagon.

And, with beautiful timing:

http://www.nytimes.com/2011/12/06/science/creating-artificial-intelligence-based-on-the-real-thing.html

"IBM, Cornell, Columbia, the University of Wisconsin,
and U. of California, Merced...
The project has been encouraging enough that in
August it won a $21 million round of government
financing from DARPA, bringing the total to $41 million"

Can I call em, or can I call em?

"But since 2008, the project itself has evolved, becoming more
focused, if not scaled back... These days at the
IBM. Almaden Research Center, there is not a lot of
talk of reverse-engineering the brain.
Wide-ranging ambitions that narrow over time,
Dr. Modha explained, are part of research and discovery,
even if his earlier rhetoric was inflated or misunderstood"

hahahahahahaaa!

But the project is already a sucess, to the
tune of $41 million - that's not a narrowing,
but an expansion, from $20 million -

Old french proverb: plus ca change, plus ca
reste le meme.

--
Rich

 

[Jim Thompson]

On Thu, 5 Jan 2012 08:29:51 -0800, Fred Abse
<excretatauris@invalid.invalid> wrote:

Simulated from Diodes Inc. model

Fred, What did your testbench look like... how did you generate those
curves?

...Jim Thompson
--
| 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.

 

[Fred Abse]

On Thu, 05 Jan 2012 10:09:37 -0700, Jim Thompson wrote:

On Thu, 5 Jan 2012 08:29:51 -0800, Fred Abse
excretatauris@invalid.invalid> wrote:

Simulated from Diodes Inc. model

Fred, What did your testbench look like... how did you generate those
curves?

Thusly:

X1 refers to the hierarchical schematic of the ZTX415 model I posted
earlier. I did it that way so's I could readily change things and crank
out quick results. You don't need to do it that way, you can use the
subckt file you have instead.

It's a quick and dirty curve tracer. Voltage source to collector, with 100
ohm series resistor. Current source to base. DC sweep of collector
voltage, stepping base current. Plot collector current against actual
collector voltage (not V1).

I've put a .PROBE card in there to remind you

I wouldn't recommend doing the same thing with a "real" curve tracer, using DC,
except, maybe in liquid nitrogen


Version 4
SHEET 1 2840 1916
WIRE 2128 1152 2016 1152
WIRE 2128 1216 2128 1152
WIRE 2016 1232 2016 1152
WIRE 2016 1232 1984 1232
WIRE 1888 1248 1840 1248
WIRE 1840 1264 1840 1248
WIRE 2000 1264 1984 1264
WIRE 1840 1360 1840 1344
WIRE 2000 1360 2000 1264
WIRE 2128 1360 2128 1296
FLAG 2128 1360 0
FLAG 2000 1360 0
FLAG 1840 1360 0
SYMBOL voltage 2128 1200 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 106 Left 2
SYMATTR SpiceLine Rser=100
SYMATTR InstName V1
SYMATTR Value 400
SYMBOL current 1840 1344 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 0
SYMBOL ztx415model 1936 1248 R0
SYMATTR InstName X1
TEXT 1824 1416 Left 2 !.dc v1 0 400 1m i1 3m 6m 1m
TEXT 1856 1440 Left 2 !.probe v(n001)


--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)

 

[Fred Abse]

On Thu, 05 Jan 2012 09:42:46 -0800, Fred Abse wrote:

I've put a .PROBE card in there to remind you

It won't do what I wanted. Get rid of it.

Just make the X-axis v(n001), and the Y-axis I(X1:16).

My mistake.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)

 

[Lostgallifreyan]

Lostgallifreyan <no-one@nowhere.net> wrote in
news:Xns9FE1BE34E7BC6zoodlewurdle@216.196.109.145:

In what context did this model ever work in LTspice used as supplied? I
can't find one. I have no trouble with any other amp model I need to
use, but in all the realworld CA3140 situations I have emulated in
LTspice, THIS model fails, with an interesting variety of errors.

Now I am NOT interested in what spurious ways I might be getting it
WRONG, I'll work that out in my own time without bothering anyone at
all. Right now I want to know if it EVER worked RIGHT. In complete
context please. If I can see proof that it works, I'll start to figure
out why I could never use it.

(It's interesting to me that on the web at large, though this model has
been given and accepted gratefully many times, no-one has ever actually
said whether they managed to USE it or not.)

First post had broken formatting of the model (web page copy), here's the
copy I originally found and used. (Also, crossposted to s.e.d this time, and
corrected some typos above..) Maybe this model is still borked in copying, or
maybe it has fundamental flaws. Please help me find out...


*$ model description: "awbca3140"
*a Device model created by analog_uprev for ca3140 on Thu Mar 1 18:48:14 IST
2001
* CONNECTIONS: NON-INVERTING INPUT
* | INVERTING INPUT
* | | POSITIVE POWER SUPPLY
* | | | NEGATIVE POWER SUPPLY
* | | | | OUTPUT
* | | | | |

..subckt CA3140 1 36 15 20 12
*START OF DECK
* +IN -IN OUT +VSS -VSS
*NODE: 1 36 15 20 12
*------INPUT STAGE-------
VOSBAL 7 29 3.00000000E-03
EU1 8 1 20 12 0.0001
EU2 8 7 5 12 -1
RB1 12 10 1 TC= 1.991040E-03 (-1.244400E-04)
IB4 10 12 1.000000E-06
RB3 12 5 8743.17 TC= 1.60000000E-03 (0.00000000E+00)
*IB3 for CA3140, and CA3140A
IB3 12 5 5.718750E-07
*IB3 12 5 2.287500E-07
G1 12 1 10 12 1.025000E-05
G2 12 36 10 12 9.750000E-06
RDM 36 29 1.500000E+12
RCM 31 13 1.500000E+12
CDM 36 29 4.000000E-12
G5 31 13 36 31 6.66667E-13
G6 31 13 1 31 6.66667E-13
*------INTERMEDIATE STAGE-------
GDM 31 16 29 36 1
GCM 31 16 13 31 -1.58113883E-05
R1 31 16 3.16358380E+02
C1 31 16 6.45457E-11
VCP 23 31 100
VCM 24 31 -100
DD1 16 23 MD2
..MODEL MD2 D XTI=1.000000P
* SPECTRE: + IMAX=1000
DD2 24 16 MD2
G3 31 6 16 31 -1.07249255E-06
R2 31 6 100000
C2 11 6 1.2E-11
RP1 31 20 3750
RP2 31 12 3750
*------OUTPUT STAGE-------
G4 31 11 6 31 -5.10867719E+01
ROUT 31 11 60
DD3 11 9 MD3
..MODEL MD3 D IS=10.0F XTI=1.0P N= 3.612647E-01
* SPECTRE: + IMAX=1000
DD4 9 11 MD4
..MODEL MD4 D IS=10.0F XTI=1.0P N= 8.028126E-01
* SPECTRE: + IMAX=1000
EU6 9 31 2 31 1
RO1 11 26 20
FF1 31 28 VFF1 1
VFF1 26 2 0.0
FF2 31 20 VFF2 -1
VFF2 33 31 0.0
FF3 12 31 VFF3 -1
VFF3 31 27 0.0
DD8 27 28 MID
DD7 28 33 MID
..MODEL MID D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
VP 20 22 -29.2613
VM 21 12 -29.3113
DD5 25 22 MID
DD6 21 17 MID
VP1 20 30 2.7501
VM1 32 12 .859456
DD9 2 30 MD9
DD10 32 15 MD9
..MODEL MD9 D XTI=1.000000F N=1 IS=10.000000F
* SPECTRE: + IMAX=1000
HH1 25 2 POLY(2) VIC2 VIC1 0 1960 0 1540 0 0 0 0 0 0
HH2 2 17 POLY(2) VIC3 VIC1 0 -1960 0 -1540 0 0 0 0 0 0
VIC1 37 3 0.0
VIC2 2 14 0.0
VIC3 14 15 0.0
VPP 37 0 1
RPP 3 0 100.0K
RO3 15 20 200.0MEG
RO2 15 12 200.0MEG
..ends
*$ end model description: "awbca3140"

 

[Lostgallifreyan]

Lostgallifreyan <no-one@nowhere.net> wrote in
news:Xns9FE1C0DDF59A8zoodlewurdle@216.196.109.145:

*a Device model created by analog_uprev for ca3140 on Thu Mar 1 18:48:14
IST 2001

Note that line wrapped; all others are intact in that post.