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12VDC to 9VDC Converter circuit diagram

2016-01-18 09:23  
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This is a 12VDC to 9VDC Converter circuit. You may use this circuit if you have fixed 12V power supply / battery, but you need 9V power supply for your electronic devices.

12VDC to 9VDC Converter circuit

Component Part List:

R1________ 560 ohm
C1________ 1000μF/16V, Electrolytic
C2________ 100μF/16V, Electrolytic
C3________ 330nF, Ceramic
Z1________ 9.1V, 0.4watt zener
Q1________ ECG184, NTE184

To get a more precise output voltage, replace zener diode Z1 with 10V and R1 with a 1 Kilo ohm potentiometer.
A Coolrib for Q1 is optional. Simple circuit to power your 9 volt cassette recorder and other stuff.

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