I need a simple circuit to detect 5 to 12V dc voltage.

 

How about a 12V mini lightbulb ?

Steve

 

no sir. that wont help.

 

no sir. that wont help.

that is very helpful post towards your goal.

 

What sort of circuit do you need? Really, a small lamp is a good voltage detector.

 

We just need more information. Do you need a high impedance load then? Do you need to actually be able to measure 5-12V? Do you need a 1MHz bandwidth? We need more information to help!!

Steve