9-V POWER SUPPLY ELECTRONIC CIRCUIT DIAGRAM FREE INFORMATION

This is a basic electronics project diagram for a 9-Volt stable power supply. This is useful for electronic devices that needs that voltage level.




Parts List:
T1 = 115/10 VAC transformer. Center Tap not needed.
IC1 = μA723, LM723, or equivalent.
Q1 = 2N3055, NTE130, or substitute. (TO-3 case) Mount on a coolrib!
BR1 = 40V-5A
R1 = 0.56 Ohm, 1 Watt, 5%
R2 = 750 Ohm, 5%
R3 = 2K7 (2700 ohm)
P1 = potentiometer, 1K, Linear
C1 = 2200uF, 25V
C2 = 470pF

Notes:
C1 filters the noise and spikes off the ac. Adjust the circuit for 9 V output voltage with the P1 potentiometer.

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