Testing Of Ac to Dc converter card

How to test PCB  card using Ic 

Op amp 741 IC or Operational Amplifier 741 IC. ... IC 741 has three stages such as differential input, gain, and push-pull output. Pin 1 and 5 are “offset null” or “balance” terminals. The op amp is nothing but a differential amplifier. 

Procedure 

First visually check 
And then connect card to  power supply
And after check supply points 🎯 in IC 
If everything good 
Then check output side 
DC voltage. 

Note - any query feel free to contact🗣📲📞  comment below particular post. 
At tips and tricks engineer zone 

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