Hello, I am trying to use an Attiny bare chip and a 2222a transistor as a switch to open and close a 12vdc 100ma solenoid valve. The attiny is running on 5v regulated power. The 2222a switches on to provide 12vdc to the valve when the at tiny pin 0 goes high. Sometimes the solenoid valve will turn…

2222a transistor as a switch

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