thanks for your answer. Oh yes I read that this op-amps is old and not efficient, only school still using it, It means that I have to supply my op-amps at around 14V even 15V?
Only my LED at the right far must lit at 11V, and my first LED at 10mV.
design a non-amplifier with a voltage of 11 with the following features, when the input voltage is larger than 11mV p-p a red LED must lit to indicate signal presents, and when the output reaches 11V p-p a green LED must lit to indicate that the maximum voltage is reached. That's my problem statement...
I thought to use a window comparator because the voltage at the input is very small to compare (10mV) with one op-amps, is it a bad idea?
thank you.