Introduction: Open EVSE Basic Power Supply

Picture of Open EVSE Basic Power Supply

Basic 12V DC power supply for use with Open EVSE.

OpenEVSE Store

12V DC - 4 Watts

Skill level: Basic soldering

Warning High voltage present!!!

Step 1: Parts

Picture of Parts


1 - Open EVSE power supply board
1 - MPM-04S-12 switch mode power supply module
1 - 3.5mm 2 position screw terminal
1 - 5.0mm 3 position screw terminal
2 - 1A 250V fuses
1 - 0.1uf ceramic capacitor
1 - 47uf electrolytic capacitor

Step 2: Getting Started...

Picture of Getting Started...

Start with the smallest components, the 2 fuses and 3.5mm screw terminal so they will stay in place when the board is inverted.

Step 3: More...

Picture of More...

Next Solder the 3 position 5mm screw terminal.

Then solder the ceramic and electrolytic (watch polarity) capacitors to the board, bent the leads on the bottom so they will stay in place.

Step 4: Finishing Up!

Picture of Finishing Up!

Carefully place the power supply module on the board and solder.

Clip the excess length off the leads and clean solder flux from board.

WARNING - High AC voltage on board! Cover the bottom half of the board including the 3 position 5mm screw terminal fuses and power supply module with a quality electrical tape or epoxy to reduse the risk of shock. On the top of the board cover IC1, IC2, R1 and R2 with a quality electrical tape or epoxy to reduse the risk of shock.

Carefully, connect power supply to 90-260v voltage source, the power supply output should be very close to 12.0v DC.  

If you wish to stack your Open EVSE and power supply add 3/4 inch spacers and screws. Make sure the screws do not come in contact with other components on either board.


About This Instructable




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