Hello guys, i am making a wireless switch circuit using LM741 Opamp IC following the below circuit diagram. But the circuit is not working, Is there any mistake in the circuit ? I double checked the connections but didn't find any false connections, so I think op-amp IC is faulty. So is there is any way to test opamp whether it is working properly or not?
Thank you....
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Circuit diagram looks fine, I hope you have connected Pin 7 and 4 to the power and ground respectively.
Other than that if you want to test the op-amp IC, then you just need few resistors and diode. Below is the circuit to test the Op-amp IC
If LED blinks means that op-amp is fine and if LED will remain on or off means that op-amp is faulty.
Instead of making this tester circuit try with another Op-amp, and if you dont have 741 then, try with some other op-amp IC. Looking at your circuit I think any op-amp IC should work, just check the pin configurations.
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Hi,
The best and quick way to check if you Op-Amp is working in good condition is by testing it as voltage follower.
You can find complete discussion here: https://circuitdigest.com/forums/analog-electronics/how-check-if-my-op-a...
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Thanks guys, I tested my Op-amp and found that it is working properly. So I again checked my circuit and found that the culprit was my 9V battery.
When measured at no load the battery has a potential of 7.2V but when connected to load it drops to 3.7V which is not enough for the circuit to work. I replaced the battery with a fresh 9V one and the circuit is not working fine.
Thanks again
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