Friday, September 11, 2009

Dual Power Supply

This schematics is of dual power supply, having voltage output 3,5,6,9,12,15 and -3,-5,-6,-9,-12,-15. LM 317 is adjustable 3-terminal positive voltage regulator and LM 337 is adjustable 3-terminal negative voltage regulator.
Switch S1 is for +ve and S2 is for -ve voltage respectively.

click on image to zoom

All diodes are 1N4007
R1, R3 270 ohm
R2 1K2 ohm
R4, R10 390 ohm
R5, R11 820 ohm
R6, R12 1K ohm
R7, R13 1K65 ohm
R8, R14 2K35 ohm
R9, R15 3K ohm
C5, C8 2200uF 25v electrolyte
C6, C7, C9, C10 22uF 25v electrolyte
C1-C4 0.1uF Ceramic
F1 0.5A fuse
S Switch
S1, S2 6-way rotary switch
T1 Center taped transformer 15-0-15v 220v

1 comment:

  1. I am heading back to YMS on Monday! This week is all about preparation. military power supplies