Having designed a 6th order sallen key butterworth low pass I'm trying to build it, so far with limited success.
I suspect faulty dual rail quad op amps. How do I test for functionality.
If I plug in a 14 pin DIL chip to a +/-ve 12v supply completely open circuit I would expect the power rails to remain. They don't, however, the negative rail goes 12v positive, differential at or virtually zero. Whats going on?
Please appreciate I'm a total novice at this.
I suspect faulty dual rail quad op amps. How do I test for functionality.
If I plug in a 14 pin DIL chip to a +/-ve 12v supply completely open circuit I would expect the power rails to remain. They don't, however, the negative rail goes 12v positive, differential at or virtually zero. Whats going on?
Please appreciate I'm a total novice at this.