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Diodes are semiconductor components made from a P-type (or metal in Schottky diodes) and N-type material (usually silicon, but germanium, selenium, and gallium arsenide can also be used), that allow current to flow in one direction only.

1 vote
2 answers
645 views

What is the point of the diode in parallel to the fan here?

I thought diodes were only used if an inductive load were to be expected and thus its used to dissipate any EMF generated. …
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1 vote
1 answer
121 views

Are these scope traces normal for a reverse polarity LED hooked up to an NPN transistor?

I've been trying to make some cheap light sensors using some coloured LEDs and am using the schematic below. The idea is to hook up a bunch of LEDs (Red, Green, Blue etc.) to try and get an idea of th …
Letshin's user avatar
  • 185