Frequent 'trigger' Questions - Electrical Engineering about PCB

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0votes

1answers

370 views

[Others] How do I trigger 3 x SCRs in series with a microcontroller without a pulse transformer?

I know ways of triggering a single SCR using a microcontroller pin. How would you go about triggering multiple SCRs in series using a microcontroller since only the last SCR cathode is connected to gr...

answered Nov 05,2020
by Alex Burt

0votes

4answers

580 views

[Others] How do I trigger a TIP32C PNP transistor with a 5V output signal from an NE555 IC?

I would like to know how. What voltage does the TIP32C need to make it as a solid state relay. Thanks for any help.

answered Aug 06,2020
by Gorge

0votes

5answers

420 views

[Others] How to trigger a low volt relay coil from 120VAC?

I have a 120VAC system that, when it switches on, needs to power a 5v board for a subsystem, such as a common shield relay. Ideally it should isolate both systems, I looked for an optoisolator 120v-&g...