EPROM eraser- light on indicator?

Nov 01, 2006 3 Replies
I

Is there a safe way to tell if the EPROM bulb (emits UV-C ray) is on? Since it's not safe to look at the bulb, I need to know if the bulb is on or if it's burned out while erasing EPROMs. So is there a simple UV-C detector circuit or something? Never seen a commercial EPROM eraser as I built mine out of 12" fluorescent lamp, long cardboard box (sealed when in use), and a 12" germicide bulb.



I wanted to know if it's on and working beside waiting 15 min or so and finding out none of the EPROM are erased.


When you hear the toilet flush, and hear the words "uh oh", it's already too late. - by anonymous Mother in Austin, TX Spam block in place, no emil reply is expected at all.
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J

"day-glo" flourescent paint, highlighter, (etc) glows brightly under UV.

I have some yellow cable-ties that were manufactured with flourescent die in them, they glow brightly under even a blue LED.

if the box is sealed there'll be no light inside it with the bulb off, use any sort of light detector.

Bye. Jasen
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M

Just use a perspex/plexi/polycarb/glass rod through a small hole in the case. The material will block the shortwave UV.

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B

Most clear LED will show some output from UV. Or file the top off a TO18 transistor !

Baron:
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