## Saturday, January 28, 2023

How to make a variable power supply Voltage 1- 60V and 0-10A current adjustable power supply

I showed you the construction of a current and voltage regulated power supply capable of carrying 5 amps using the BD139 and 2SD1047 transistors with the LM317 integrated circuit. LM317HVT (60V) and BD139 1 piece is enough. You can easily use this circuit in both constant current and constant voltage applications. If you are going to use the high current circuit for a long time, remember to cool it

This diagram shows how to make an accurate regulated power supply of 12 Volts at 20 Amps. In fact, this diagram is a working basis for power supplies from 5 Amps to 150 Amps. For a 5 Amp power supply, a single power transistor added as an external pass, the 2N3055. With 4 2N3055 in parallel we obtain a current of 20 Amp. We calculate 5 amps more per transistor added. Based on the LM723CN integrated circuit which offers us, in addition to being variable from 2 V to 37 V, very good regulation precision in the order of 1.5 millivolts on 5 load amps.

How to make a variable power supply Voltage 1- 60V and 0-10A current adjustable power supply

I showed you the construction of a current and voltage regulated power supply capable of carrying 5 amps using the BD139 and 2SD1047 transistors with the LM317 integrated circuit. LM317HVT (60V) and BD139 1 piece is enough. You can easily use this circuit in both constant current and constant voltage applications. If you are going to use the high current circuit for a long time, remember to cool it

This diagram shows how to make an accurate regulated power supply of 12 Volts at 20 Amps. In fact, this diagram is a working basis for power supplies from 5 Amps to 150 Amps. For a 5 Amp power supply, a single power transistor added as an external pass, the 2N3055. With 4 2N3055 in parallel we obtain a current of 20 Amp. We calculate 5 amps more per transistor added. Based on the LM723CN integrated circuit which offers us, in addition to being variable from 2 V to 37 V, very good regulation precision in the order of 1.5 millivolts on 5 load amps.