This dual polarity power supply is easy to build, requires few parts, and is adjustable from 0-15 volts. It is great for powering op amp circuits, as well as other circuits that require a dual supply voltage.
- C1, C2 2200uF 35V Electrolytic Capacitor
- C3, C4, C5, C7 1uF 35V Electrolytic Capacitor
- C6, C8 100uF 35V Electrolytic Capacitor
- R1, R4 5K Pot
- R2, R3 240 Ohm 1/4 W Resistor
- BR1 2A 30V Bridge Rectifier
- U1 LM317 Adjustable Positive Regulator
- U2 LM337 Adjustable Negative Regulator
- T1 30V Center Tapped 2 Amp Transformer
- S1 SPST 2 Amp Switch
- MISC Heatsinks For U1 And U2, Line Cord, Case, Knobs For Pots, Wire
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