Hi,
I'm trying to build a differential amplifier using OP177, when (+V and -V) 15v is connected to opamp, instead of 15 volts at pin 4 and 7 its becoming 0.78 or 0.90 volts on Pin no 4 and 7, what could be the problem can anyone help me solve this.
Thank you
Karthik,
Without seeing your circuit schematic, my first guess would be that the cause of your problem is that you have swapped the supplies - in a single package, pin 4 is a negative supply while pin 7 is a positive one (see below), so you need to connect -15V to pin 4 and +15V to pin 7. Reversing supplies, without current limiting to less than 10mA, may permanently damage the part.
