OpAmp 5v regulated using mosfet

128

00:58:25

Using mosfet and the OpAmp to get stable 5v with hight amperage... If you need more than 1A a heatsink is required 

published 4 years ago

PrathikP

4 years ago

https://everycircuit.com/circuit/5578554310656000

PrathikP

4 years ago

Few things: you don't need the 1mF and 470uF caps. They make no difference in EC. And if you do want to use some output capacitance, it's usually in the order of 100nF to 10uF for linear regulators.

PrathikP

4 years ago

Regarding the heatsink, you would need one if the output current exceeds around 100mA as the power dissipation would exceed 1W beyond that current

PrathikP

4 years ago

And to prevent your simulation from throwing a CFS error, use a switch.

wajdi

4 years ago

@PrathikP thank you for your precious advice like usual. Best Regards

wajdi

4 years ago

@PrathikP, why did you added 100k resistor from source to the output of the opamp? Mosfet don't need biasing?! For the heat you are right...

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