When we using ICs in the circuit some times we cannot get desired output then we have to check each components in the circuit in order to check operational amplifier IC we need to put in application. To easily check the op-amp this simple circuit can be used.
Circuit diagram for IC 741 tester
Construction and working
This circuit constructed with two indication LEDs and variable resistor with capacitor, by placing op-amp in this circuit it becomes as a pulse generator if the testing IC is good means the two LED glows alternatively.
If the LEDs not glowing alternatively means the testing IC might damaged or faulty one.