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DIY Power Supply: check me?

Discussion in 'Burnt Fingers DIY Effects' started by Mark the Moose, Oct 27, 2020.

  1. Mark the Moose

    Mark the Moose Tele-Holic

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    I'm thinking I'll take a shot at my own power supply. I found this schematic in an instructable awhile back and saved it. Today I put together a stripboard layout. Figure I'll use a cheap wall-wart transformer or laptop power supply...something in the 12 volt/4-5 amp range. That should give me plenty of juice. Thoughts?
     

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  2. Switchy

    Switchy Tele-Afflicted

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    I'm not an electronics engineer, but I'll offer my opinion.
    1) It's not supplying isolated power to your pedals, so it's basically no better than a wall wart daisy chained.
    2) The 780X series are somewhat noisey and require good filtering, and if I was doing a circuit, I'd be using a combination of capacitors for each. Ex: 100nF and 100uF in parallel

    Just my thoughts
     
  3. LightningPhil

    LightningPhil Tele-Meister

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    Little isolated power converter modules are reasonably inexpensive. There would be a little noise, but filtering should be trivial. The alternative isolated PSU method is separate transformers (or separate windings from a single one) with individual regulators.

    Something like this, though a little spec sheet reading is advised:
    https://uk.rs-online.com/web/p/isolated-dc-dc-converters/1874589/
     
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