Driver to drive?

On Sun, 27 Jan 2013 18:25:46 -0800, Robert Baer
<robertbaer@localnet.com> wrote:

Jamie wrote:
And I can't put it down.

Jamie

Is that supposed to be punny?
Click to expand...
I thought it was pretty punny >:-}

...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 | |
| Voice:(480)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.
 
On 1/27/2013 10:01 PM, Jim Thompson wrote:
On Sun, 27 Jan 2013 18:25:46 -0800, Robert Baer
robertbaer@localnet.com> wrote:

Jamie wrote:
And I can't put it down.

Jamie

Is that supposed to be punny?

I thought it was pretty punny>:-}

...Jim Thompson
Click to expand...

Do you mean it was fretty punny?

Rick
 
Robert Baer wrote:
Jamie wrote:
And I can't put it down.

Jamie

Is that supposed to be punny?
Click to expand...

No. Just another low brow attempt at Redneck humor.
 
"Jon Elson" <elson@pico-systems.com> wrote in message
news:sJqdneMBLrC5T5jMnZ2dnUVZ_qednZ2d@giganews.com...
Geez, how the heck do (did) they do that? As far as I know, vibrato
is not a consciously controlled thing, so you can't sync it. I
wonder if it was done by running their voices through a MIDI-Verb
in the production process?
Click to expand...
Everything's consciously controlled, to some small extent. By
concentrating, I can reduce my heart rate. Sometimes. I think. There's
a few people with the proven ability to do things like control heart rate
(up and down?), basal metabolic rate (let's go sleep on Mt. Everest
without a shirt on!) and probably more.

Tim

--
Deep Friar: a very philosophical monk.
Website: http://seventransistorlabs.com
 
"Adrian Jansen" <adrian@qq.vv.net> wrote in message
news:5105c2a0$0$29876$c3e8da3$5496439d@news.astraweb.com...
With the long life ( quoted ) on the LEDs, they essentially become
fixtures in the building, rather than replacable elements like the
tungsten lamps we have all used. So it makes more sense to have the
entire lamp installation permanent. That is, if the rest of the driver
can also be made long life.
Click to expand...
I've got it!

We'll build a high-reliability circuit, conservatively rated transistors,
big transformer/coils, lots of heatsinking, and leave the inevitable
electrolytic hanging out the side, mounted in a screw base! Patent
pending!

Ya know, the scary thing is the plausibility. They need to hurry up and
make high voltage aluminum polymers work. Then this'll (mostly) go away.

Tim

--
Deep Friar: a very philosophical monk.
Website: http://seventransistorlabs.com
 
John Larkin wrote:
Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.
Click to expand...

That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).
 
On Sun, 27 Jan 2013 23:09:20 -0500, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).
Click to expand...

It is NOT a document, you RETARDED pieces of shit!
It is no different than a resistor color code card or the "Ohms Law Pie".

With 216 permutations, it performs the task perfectly.

You fucking retards are pathetic.
 
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...
John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).
Click to expand...
Geeze, it sounds like the state department.
 
On Sun, 27 Jan 2013 23:21:03 -0500, "tm" <No_one_home@white-house.gov> wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).

Geeze, it sounds like the state department.
Click to expand...
Except less dead bodies.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On Sun, 27 Jan 2013 23:21:03 -0500, "tm" <No_one_home@white-house.gov>
wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).

Geeze, it sounds like the state department.

Now go look at the workbook.
Click to expand...
 
tm wrote:
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).

Geeze, it sounds like the state department.
Click to expand...

So, you've never worked in engineering at a company that does
aerospace related work?
 
On Mon, 28 Jan 2013 00:25:22 -0500, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

tm wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).

Geeze, it sounds like the state department.


So, you've never worked in engineering at a company that does
aerospace related work?
Click to expand...

An assembly utilizing such a connector and keying device would only
need to have one diagram on its documentation. Each product using a
similar connector would have to have a different configuration. This
keeps you from plugging any given device into the wrong fan tray on the
aircraft.

So, in creating his drawing describing to the production staff as to
how to build the device, the engineer or draftsman would utilize this to
look up the configuration they intend to use on said drawing.

Then, if desired, he could grab a graphic from it and paste it into his
drawing. It is simply a design and production aide.

You have all the engineering aptitude of a slug, Terrell.
 
Tim Williams wrote:

"Jon Elson" <elson@pico-systems.com> wrote in message
news:sJqdneMBLrC5T5jMnZ2dnUVZ_qednZ2d@giganews.com...
Geez, how the heck do (did) they do that? As far as I know, vibrato
is not a consciously controlled thing, so you can't sync it. I
wonder if it was done by running their voices through a MIDI-Verb
in the production process?

Everything's consciously controlled, to some small extent. By
concentrating, I can reduce my heart rate. Sometimes. I think. There's
a few people with the proven ability to do things like control heart rate
(up and down?), basal metabolic rate (let's go sleep on Mt. Everest
without a shirt on!) and probably more.
Yes, but synching a basically non-volitional function that is pretty
Click to expand...
rapid sounds difficult.

Jon
 
On Sun, 27 Jan 2013 22:13:46 -0800, BubbleSorter
<BubbleSorter@URallinyerplace.org> wrote:

On Mon, 28 Jan 2013 00:25:22 -0500, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


tm wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:5N-dnR9avJlvZJjMnZ2dnUVZ_rGdnZ2d@earthlink.com...

John Larkin wrote:

Michael A. Terrell wrote:

It's not even a good assembly drawing, without details of what it's
used for. It doesn't have anything to make it tracable, or tell you
what level the assembly or subassembly it is intended for.

Yeah, don't let the ISO9001 auditors see this sort of uncoltrolled stuff
being
used, either in engineering or on the shop floor. He said himself that it
controls configuration.


That isn't even suitable in most engineering departments with no
project number, undated and no signature(s).

Geeze, it sounds like the state department.


So, you've never worked in engineering at a company that does
aerospace related work?


An assembly utilizing such a connector and keying device would only
need to have one diagram on its documentation. Each product using a
similar connector would have to have a different configuration. This
keeps you from plugging any given device into the wrong fan tray on the
aircraft.

So, in creating his drawing describing to the production staff as to
how to build the device, the engineer or draftsman would utilize this to
look up the configuration they intend to use on said drawing.

Then, if desired, he could grab a graphic from it and paste it into his
drawing. It is simply a design and production aide.

You have all the engineering aptitude of a slug, Terrell.
Click to expand...

Typical that the bastard has no response. Now that he has found out
how such things DO get utilized during the design process.

Terrell and Larkin a match-up of two retards with little or no real
world design prowess.
 
On 26/01/2013 23:08, Jon wrote:
http://3d-triangulation-calculator.bravehost.com/womansong.html

I had trouble creating this waveform mathematically. Notice that -1 <=
sin(z) <=1 so z has to take on values at least up to pi/2 to 3pi/2,
which is violated by the equation. I only used it since it was the
only thing that worked.
Click to expand...
I think you need to do a lot more homework into what vibrato is first.

The waveform you have drawn will just sound mildly annoying.

BTW I think you might actually be able to program the signal generator
function in the latest DAQARTA to do something like what you want with
no soldering necessary. It's spectrum analyser function will certainly
help you understand the properties of musical waveforms better.
Also I'm not sure how to design the electronics to create the red wave
(resultant). Right now I'm using two 555 timers. The wave is going to
be an audio signal. (the red wave in the gif image above).
Click to expand...
A 555 will only ever output a square wave from pin 3 or a triangle wave
off the capacitor if you buffer it appropriately. You want a pure sine
wave in an ideal world to match the graph you have shown.

Vibrato is actually a combination of mostly frequency with some small
amount of amplitude modulation of a higher frequency carrier wave.

On a violin for example the vibrato would be around 5-20Hz whereas
orchestral A is 440Hz. Not sure about singers voices.

You should be aiming to get something more like

y(t) = (A + a.sin(Vt))*sin( (F + f.sin(Vt))t)

A is the pure amplitude, a is the amount of amplitude modulation
F is the pure frequency, f is the amount of frequency modulation

Where A >> a, F >> f and F >> V

The vibrato will sound awful if it is a square wave (think ~DALEK!).

So you want something like a triangle wave with sine shaper for the
vibrato with a range of say 5-25 Hz and a voltage controlled oscillator
being fed with that plus a DC voltage to determine centre pitch.

The two female vocalists in the band ABBA have synchronized vibratos,
making their singing particularly pleasing. Also in the band Heart in
the song "Music Man" towards the end of the song the synthesizer goes
into a warbly oscillation. I don't like the sound of it but if I can
duplicate it with a different frequency it might sound better.
Click to expand...
I expect it was all done electronically by clever multitrack recording
in the studio.

--
Regards,
Martin Brown
 
Jamie wrote:
At the lab, there is a smoke chamber and it has a photo tube.

This is this problem, for what ever reason the lab has 0 documentation
of the electronics and the service tech they tend to use for calibration
does not know any more.. All he knows is what it suppose to be at the
end of the anode with a 1MEg load on it, which is 0..5V ..

Ok, all that is just fine however, there is some confusion about
the voltage requirements for this tube, of course, we can't find any
spec's on that either.

In any case, after looking at generic photo multiplier tubes and
circuits it appears that -600DC at the cathode seems to allow this to
work ok when we calibrate for dark current. We need the tube to have
some linkage at dark current so when the filter is applied we have a
detectable view of the smoke.

Does 600V sound about right?

The calibration tech seems to think it should be down around -350VDC
which works fine for a clear view but has a drop off so the filter view
has very low sensitivity, which makes perfect sense to me since the tube
needs to be ionized to get some leakage.

We do have photo multipliers in use elsewhere however, those supplies
are up around 1kVDC and that we do have proper specs and design work but
they are a much larger tube, the supply in the smoke chamber unit can
only output up to -700DC.

What's your take on this voltage scale?


Jamie

Please refer to: http://www.oil4lessllc.org/PMT/
Click to expand...
The PMTs.pdf copy is a good reference, as well as the
PMT_handbook_v3aE.pdf which is by Hammamatsu.
Both were downloaded from the web.
 
Martin Brown wrote:

On 26/01/2013 23:08, Jon wrote:

The two female vocalists in the band ABBA have synchronized vibratos,
making their singing particularly pleasing. Also in the band Heart in
the song "Music Man" towards the end of the song the synthesizer goes
into a warbly oscillation. I don't like the sound of it but if I can
duplicate it with a different frequency it might sound better.

I expect it was all done electronically by clever multitrack recording
in the studio.

Yup, I agree. It would be trivial to do with a MIDI-verb or similar studio
Click to expand...
gear of the time. I can't imagine anybody could sync their vibrato as
a vocal technique, except possibly by standing next to a pipe organ's
pedal ranks.

Jon
 
On Mon, 28 Jan 2013 14:45:13 -0600, Jon Elson <jmelson@wustl.edu> wrote:

Tim Williams wrote:

"Jon Elson" <elson@pico-systems.com> wrote in message
news:sJqdneMBLrC5T5jMnZ2dnUVZ_qednZ2d@giganews.com...
Geez, how the heck do (did) they do that? As far as I know, vibrato
is not a consciously controlled thing, so you can't sync it. I
wonder if it was done by running their voices through a MIDI-Verb
in the production process?

Everything's consciously controlled, to some small extent. By
concentrating, I can reduce my heart rate. Sometimes. I think. There's
a few people with the proven ability to do things like control heart rate
(up and down?), basal metabolic rate (let's go sleep on Mt. Everest
without a shirt on!) and probably more.
Yes, but synching a basically non-volitional function that is pretty
rapid sounds difficult.

Jon
Click to expand...
Jon, i am far from worlds greatest vocalist and i can control my vibrato
in strength and frequency. If i can do it surely many professionals can.

?-)
 
On Sun, 27 Jan 2013 20:58:14 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sun, 27 Jan 2013 22:44:40 +0200) it happened "E"
invalid@invalid.invalid> wrote in <ke43jn$ki6$1@dont-email.me>:

I don't quite understand why they don't use good old inductive ballast (or
current-limiting transformer) in those led things?

Copper is expensive, shipping weight too, efficiency, size...


Cheap shit ballast is way more reliable than any cheap shit switchmode psu.

You throw away the converter with the lamp,
at least one I have has it buld in.
The lamp will only work for a few thousand hours (LED life).
So makes no sense to make the converter last longer.
Click to expand...
Gosh, i am seeing LED lamp and luminaire ratings of 50,000 hours and up,
even claims of over 100,000 hours. You would need damn good PSUs for
those.

?-)
 
On Wed, 30 Jan 2013 11:04:55 -0800, josephkk <joseph_barrett@sbcglobal.net>
wrote:

On Sun, 27 Jan 2013 20:58:14 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sun, 27 Jan 2013 22:44:40 +0200) it happened "E"
invalid@invalid.invalid> wrote in <ke43jn$ki6$1@dont-email.me>:

I don't quite understand why they don't use good old inductive ballast (or
current-limiting transformer) in those led things?

Copper is expensive, shipping weight too, efficiency, size...


Cheap shit ballast is way more reliable than any cheap shit switchmode psu.

You throw away the converter with the lamp,
at least one I have has it buld in.
The lamp will only work for a few thousand hours (LED life).
So makes no sense to make the converter last longer.

Gosh, i am seeing LED lamp and luminaire ratings of 50,000 hours and up,
even claims of over 100,000 hours. You would need damn good PSUs for
those.

?-)
Click to expand...
Or you need some imagination. That's around 35 years at 8 hours a day, so
there's little risk to making the claim and being off by 4:1 or so.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
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