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Psu dc8-13 volt 35a with lm324

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eril

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Hello,
Here are schematic of PSU DC 8-13Vdc 35A using LM324, you can modified and test it under proteus, this power supply include the protection of short circuit.

Merci.
View attachment ERIL.rar
PSU DC 8-13_35 A_LM324.jpgPSU DC 8-13_35 A_LM324_PTS_ERIL.jpg
 

The LM324 is very slow. The transient response of your power supply that uses it will be poor.
Your schematic does not show the SIX paralleled driver and output transistors.
 

My past experience of multiple transistor 'darlington' configurations in big PSUs is not good. Under short circuit, there is a risk (especially with slow op-amps) of excessive current causing failure of one of the drivers, BC337 & 2SC1173 in this design, which results in unregulated voltage and current flowing to the load.

I would have some concern that the combined base currents of six 2N3055 transistors while running at around 6A each would be close to, or exceeding the 3A maximum rating of the 2SC1173 too.

Brian.
 

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