PSU Addon

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PSU Addon to create a stable +/-12V voltage for your case. Input can be up to 35V DC.

This is designed to be used (in my case) with a Meanwell RT65C. Input in my case will be +/-15V. But it can be used with any DC power supply, as long as you have +/-2V above +/-12V on the input.

This PSU-addon will provide a maximum of 1A on each rails ** But check the specs of the PSU you have on the input to make sure that it’ll be sufficient.

The input capacitor is oversized because I had those lying around. But you could use anything a bit smaller. Check the voltage regulators datasheet if you want to make sure.

Schematics

BoM

See bom

You can donwload the bom in excel format here

Build Informations

Put heatsink elements on the voltage regulators, as they will get really hot during use.

When building modules, always do it in this order (from smallest component to highest):

• diodes
• resistors
• Electrolytic capacitors (small ones)
• Terminal blocks connectors
• Voltage regulators
• Oversized electrolytic capacitors

Images

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Follow this link if you want to dowload the latest version of gerber files, schematic, kicad files…

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