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# 6-8A / 0-28V Variable Power Supply Circuit

2016-04-20 08:44
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This is the schematic diagram of variable power supply. The output voltage of this power supply circuit can be adjust from 0V to 28V DC, while the current output is static the rang is about 6A up to 8A.

Parts List:

R1 = 2K2 Ohm 2,5 Watt

R2 = 240 Ohm

R3,R4 = 0.1 Ohm 10 Watt

R7 = 6K8 Ohm

R8 = 10K Ohm

R9 = 47 Ohm 0.5 Watt

R10 = 8K2 Ohm

C1, C7, C9 = 47nF

C2 = 4700uF/50v – 6800uF/50v

C3, C5 = 10uF/50v

C4, C6 = 100nF

C8 = 330uF/50v

C10 = 1uF/16v

C11 = 22nFD1…D4 = four MR750 diodes (MR750 = 6 Ampere diode) or 2 x 4 1N5401 diodes.

D5 = 1N4148, 1N4448, 1N4151

D6 = 1N4001

D10 = 1N5401

D11 = LED

D7, D8, D9 = 1N4001

TR = 2 x 15 volt (30volt total) 6+- Ampere

IC1 = LM317

T1, T2 = 2N3055

P1 = 5k

P2 = 47 Ohm or 220 Ohm 1 Watt

P3 = 10k trimmer pot

F1 = 1 Amp

F2 = 10 amp

Source: schematicdiagram.s4s.in