Here's an interesting post on the visible photon emission from a reversed biased breakdown transistor emitter base junction.
https://www.eevblog.com/forum/projects/ ... msg3063526
Best,
Visible emission from transistor PN junction
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Visible emission from transistor PN junction
Research is like a treasure hunt, you don't know where to look or what you'll find!
~Mike
~Mike
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Did you go to Noopy's site? I've photographed some of these but didn't realized they could be powered after upcapping. I'm not electronic savvy.
https://www.richis-lab.de/Bipolar02.htm
-JW:
https://www.richis-lab.de/Bipolar02.htm
-JW: