DC power supply 5V and 12V using 2N3055-LM309

This be DC power supply regulator circuit be simple. That can give voltage come out 12V and 5V by use part base be Transistor 2N3055 and Zener Diode 12V. Make can take volt can reach about 15V maintain one’s position voltage be stable 12V well. And change the integrated circuit LM309 for regulate about 5V for apply to Digital Circuit general get. For C3-0.1uF filter the frequency disturbs all well. For other detail friends see in the circuit please sir.


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