aljamri
Member
The circuit I posted is ALL YOU NEED . It is a delay circuit and the electrolytic can be 47u to 100u.
Just push the switch momentarily and the circuit will work. You may need 100k between base and emitter.
Try it and see if it works. The unknown factor is the impedance of the pads on the PC board, making up the switch.
They should be 50k to 100k or more.
This is a much better choice since you will have single circuit and forget about common ground.