Constant Current DC Buck Converter

165

03:05:55

The current is limited with the voltage value of the DC source on the right, if the current on the load (4Ω resistor), is over the set 2A, the circuit will start to turn On and Off in order to keep the average current on 2A.

published 6 years ago

PrathikP

6 years ago

See your circuit keeps cutting power on and off. Now that's a bad idea, especially with a relay. A relay might take a second or two to react and letting the over-current flow through your faulty circuit for that period of time on and off is bad. Your "protection" circuit must shut off permanently when a fault is detected, and must be reset manually (like an MCB). Such a circuit is called Latching Type Current limiter.

PrathikP

6 years ago

http://everycircuit.com/circuit/4879556859920384

OctavioNeblod

6 years ago

Sure, instead of the relay it should be use a MOSFET as switch, Is just that I couldn't simulate it with the relay. Thanks for your comments

PrathikP

6 years ago

That's not the point. My point is that such a circuit should contact a latch

PrathikP

6 years ago

Now what you have made is a constant current buck converter

OctavioNeblod

6 years ago

Ah, yes, you are right! That's exactly what I wanted to do. I think I should change the title then. Thank you for your comments, I reviewed your circuit too, I would like to be as good designing circuits. Do you have a Master on electronics or something?

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