need help in regulating a DC supply of 24 volts and 5A

umair1986 said:

I am creating a regulated 3.4 Volts 5 Amp DC supply from 24 volts 5Amp DC supply, now the problem is that when I use a load of 2 amp the transistors start heating up and then burnt out even I m using heat sinks, due to heavy power dissipation on transistor.I m attaching a schematic of my regulator supply,kindly check it and help me out.I have to dirve a load about 5 amp.

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eblc1388 said:

Linear regulator scheme is very poor as you are wasting 20.6W as heat for every ampere you put into the load. Under a 5A loading, that's more than 100W. The voltage difference are too great and the current too high.

Either use a huge heatsink or use switch mode PS instead.

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Gaston said:

how is that regulated when there is no feedback from the output?

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