![]() Pin diagram of LM741 is given below:Ĭircuit is very simple and we have kept is simple with few components, which can be easily built on breadboard or on PCB. IC LM741 is advanced and commonly used Op-amp as voltage amplifier. Now how to test the components for fault? We have previously built a Transistor Tester Circuit to test transistor and now we are building Simple Op-amp Tester Circuit to test the LM741 IC. After some testing we find that one of the components has been burned. Sometimes we start with a working circuit and then after some time we find that circuit is not working. Some Op-amps have more than one comparator inside (op-amp LM358 has two, LM324 has four) and some have just one comparator like LM741. Op-amps have large gain and usually used as Voltage Amplifier. And if the voltage of inverting input (-) is Higher than non-inverting end (+), then output is LOW. When voltage at non-inverting input (+) is higher than the voltage at inverting input (-), then the output of comparator is High. ![]() Op-amp basically has Voltage Comparator inside, which has two inputs, one is inverting input and second is non-inverting input. We have used different Op-amps in many circuits and developed a separated section for Op-amp Circuits. ![]() Op-amp (Operational Amplifier) is very important component in Electronics, and used in many Electronics circuits to serve different purposes.
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