Notes:
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.
12VDC to 9VDC CONVERTER CIRCUIT SCHEMATIC DIAGRAM
12VDC to 9VDC CONVERTER CIRCUIT SCHEMATIC DIAGRAM
Notes:
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.
Notes:
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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