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FET driver

It's been a long time- I *think* around $15-$20 each in smallish quantities.

The spectral response curve is down to 1/10 at 230-255nm depending on the type and most of the 'UV' LEDs are more like 400nm, so no, a malicious element would not be able to fool the flame detector and cause a massive explosion with a UV LED flashlight. These guys

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claim to have UV-C LEDs in the 250-280nm, but that's still well outside of the peak at ~200nm.

The Hammamatsu A type is very insensitive to even the strong Hg line at 253nm.

--sp

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Best regards,  
Spehro Pefhany 
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Reply to
Spehro Pefhany
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maybe so but, with this output section, its less components and it just fits in.

output section for - RAIL generator.

R1 sets min drive needed.

+------------+ +5 Volt from reg. Vcc(324) | | | | |\+ R1 + -|-\ ___ |< | >--|___|--| PNP -|+/ |\ |/+ | +----+>z-+---+ Vee(324) | | | 5VZ C| --- C| --- C| | | === GND GND (created by AACircuit v1.28.6 beta 04/19/05
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I suppose a charge pump would do but I can't see how to do that using the spare op-amp I had and inserting it into the Vee like I did?

With this, I did not need to have an additional IC body on the board.

Jamie

Reply to
M Philbrook

Yes. If the particles form a colloidal suspension in the air, *FOOM* is possible.

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Les Cargill
Reply to
Les Cargill

Thanks, ~$20-40 would be OK, there was one that had a tail out near 300nm. I saw some 308 nm. leds for ~$1. Some sorting and and maybe temperature tuning to change the wavelength?

(Are there other commercial tube photo-cathodes. ) George H.

Reply to
George Herold

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