You haven't been paying attention. Baer is definitely dumber than John Larkin (who occasionally shows signs of intelligence, mostly obscured by his lame attempts to look clever).
-- Bill Sloman, Sydney
That's odd. They are still going to be avalanche diodes.
Using them as noise sources involves picking an average current which is lo w enough that the multiplication process fails to sustain avalanche from ti me to time, so the avalanche gets turned off briefly (and intermittently) b efore another charge carrier shows up to get it going again.
Playing with the standing current might help. The actual avalanche region i s very small, and apparently emits photons as the charge carriers multiply (and these photons can generate new charge carrier pairs) and the manufactu rer may have changed the production process enough to mess about with some aspect of this.
Changing supplier might also work.
-- Bill Sloman, Sydney
Most of the flavor is gone in a half hour.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Maybe they changed the junction area. Some people sell the same part as 1/4 watt, 1/2 watt, 1 watt zeners.
Just like 1N4001...1N4007. Most people only really make two diodes to cover the whole series.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
The pad stuff is plenty springy.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
A sheet of T600 costs about $1 per square inch. I'm cutting it manually with an x-acto, but we might have it die cut if product volume ever picks up.
I don't waste any, just patch together any loose bits to cover the area in need.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
He's got about 5 watts and maybe 15 square inches of PCB. The power density is tiny. A few postage-stamp sized pieces of T600 should be plenty.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
He's well below 0.5 watts per square inch. A square inch of 1 mm T600 would be about 0.25 K/w. So we'd lose about 0.12 degrees C across the gap pad.
OK, grumble, some hot spots might rise a full degree C.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Read my posts.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
OK, supply us some facts. Numbers, please.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
John Larkin wrote in news: snipped-for-privacy@4ax.com:
Our stuff was a 1/4 inch thick. Not something a mil contractor hacks at with an exacto or a more professional scalpel, which I am NOT surprised you are also in the dark about. Scalpels are far better for precise industrial carving of things.
John Larkin wrote in news: snipped-for-privacy@4ax.com:
500 volts per mil.
Guffaw!
GH
But he's correct.
Is inane your new word of the day?
John S wrote in news:q3c7p4$1hl$ snipped-for-privacy@dont-email.me:
Sorry, but you and he are BOTH wrong. FLIR's $1500 bottom of the line unit examines circuit boards and spot temps just fine.
John S wrote in news:q3c85q$1hl$ snipped-for-privacy@dont-email.me:
No, but today it matches your behavior.
Yes, you're sorry.
Got any pictures? About what's the size of the smallest resolvable hot spot?
FLIR gave us one of these for free
but we almost never use it. Among other faults, it's fixed-focus.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
That does seem to be some sort of number. Well done.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
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