There are many times we need 9Volt power supply. By the circuit we can produce 9volt output. Please see the circuit diagram.
Requirements:
1.Input-(220-250)V.AC
2.Transformer-12-0-12volts
3.Diode-D1,D2-in4001,D3-BZY88,9.1v
4.Resistor-R1-390ohm
5.Capacitor-(C1-100/25),(C2-100/15)
6.Transistor-TIP41A
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