The series Power Supply / Power Supply 0-12V variable

The series Power Supply / Power Supply 0-12V variable is a circuit power supply or power supply that we can change the voltage from 0-12v to suit our needs, for example, to charge the battery or other purposes. My time series of STM is very useful as a power supply circuit to test circuit that I'm making.

Do not need a big budget to make a series circuit Power Supply / Power Supply 0-12V variable.

Components needed:

1. Transformer CT 1 Ampere Only (No big bulky, if 3 amperes scared later damaged its diode) (1 fruit)

2. Diode IN4001 4 pieces (1 piece)

3. Zener Diode BZx79 (1 fruit)

4. 150 ohm resistor (1 fruit)

5. Variable Resistor 5 K ohms (1 fruit)

6. Elco 2200 UF - 50V (1 fruit)

7. Elco 100 UF - 50V (1 fruit)

8. Transistor BD 131 (1 piece)

9. Other enhancements such as cables, switches, PCB, Box, etc..