I am going to create the following circuits. However I need to be able to have a switch that completes the lightbulb circuit when VM1 input > 4.3v
I think a transistor may be the answer from what I have read. Please could someone give me some help. I have thought about using a relay, but this just seems to mess up the voltage to VM1 Any help is greatly appreciated.
I believe this is the solution I was looking for. Please read this carefully before testing. POT's R1 & R2 are attached to the same wiper, so what happens to one must happen to the other. The switch SW1 is a push to break switch. Please could you tell me if the resistors I have selected are compatible with the zener diodes I have selected. Thank you.