This Dual Symmetrical Power Supply is Perfect for powering up an audio amplifier or crossover filter etc. Power supply circuit just need four rectifier diodes and four electrolytic capacitors. There is also provision for six optional capacitors for reducing RF emissions. All these items are very easy and cheap. Power supply circuit schematic:
C5,C6,C7,C8 = 2200uF 50V electrolytic capacitors.
C1,C2,C3,C4, = 100nF 50V ceramic capacitors.
C9,C10 = 10nF 50V capacitors.
D1.D2.D3.D4 = 1N5401 rectifier diodes.
PCB Layout Design Dual Symmetrical Power Supply for Audio Amp