A simple stabilized 9V regulated power supply built with IC 723, 2N3055 and a few external components.

9 volts stabilized power supply components
T1 = 115/10 VAC transformer. Center Tap not needed.
IC1 = µA723, LM723, or equivalent.
Q1 = 2N3055, NTE130
BR1 = 40V-5A
R1 = 0.56 Ohm 1 Watt
R2 = 750 Ohm, 5%
R3 = 2K7 (2700 ohm)
P1 = 1K, potentiometer
C1 = 2200uF 25V
C2 = 470pF


9v regulated power supply schematic

9v regulated power supply

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