bd139 12v dc power supply

Simple 12V DC Power Supply Circuits

Here are 4 simple 12V power supply circuits with output voltages around 12V. First power supply circuit is built with BD139, one zener diode and a few passive components. Each of the schematic is very simple to construct and will function without problems if you respect the maximum power supply ratings.

12V dc power supply schematics

12V BD139 power supply circuit

bd139 12v dc power supply

LM7812 power supply schematic

A very simple PS circuit with the basic 3 Amper version of LM7812 IC.

7812 12v power supply

LM317 variable power supply circuit

lm317 12v dc power supply

2N3055 adjustable power supply schematic

This power supply circuit has a over-current protection and a good stabilized voltage. It can deliver up to 1.6 A.

2n3055 12v dc power supply

Related Products : Power Supplies | AC to DC Power Supply  |  DC to DC Converter and Switching Regulator Module


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