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![12V to 9V DC converter 12V to 9V DC converter](images/circuit1.gif)
12V to 9V DC converter
By Tony van Roon
Simple Car Converter for 12V to 9V.
![12V to 9V DC converter circuit](images/pages/car912.gif)
12V to 9V DC converter circuit
Parts List:
R1 = 560 ohm
C1 = 1000uF/40V, Electrolytic
C2 = 10uF/25V, Electrolytic
C3 = 330nF, Ceramic
Z1 = 9.1V, 1watt zener
Q1 = ECG184, NTE184
Notes:
To get a more precise output voltage, replace zener diode Z1 with 10V and R1
with a 1Kilo ohm potentiometer. A Coolrib for Q1 is optional but highly
recommended. You can replace Q1 for a more robust type to get more output amps
depending on your requirements. Simple circuit to power your 9 volt cassette
recorder and other stuff.
4133
21 August 2007