In this picture, there is a key switch K1 at the 12V power supply. I want to use a single-chip microcomputer to control a three-stage tube as a switch to control the on and off of the circuit power supply. What should I do, I hope the master will advise.
Felicity 发表于 November 7, 2020
PMOS switch circuit:
Ahmed 发表于 November 7, 2020
Use relay or triode, MOS tube!
Larry 发表于 November 7, 2020
R3 is shorted, the selected value of R2 is 12V/maximum output current Io,
R1=(UI-0.7)*hef/(2*Io)
UI=0V, Vo=12V; UI=5V, Vo=0V
