Apr 03,2018
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  • I successfully built the board and it's working fine. In your picture it shows 3 connections on the ac input. It only needs two is that right? I swapped the outer wires and it works either way. Maybe I have something wrong? Can you tell how wall wart should be connected ?

    kirill semenov 2022-09-08 22:03:28Reply

    3 connections is for double wound or center-tapped transformer. +15, -15 and 0 It is good idea to connect this psu to AC source. Please check this link for example https://www.circuitbasics.com/linear-power-supplies/

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  • Davidedwardwebber - It's pretty much a clone of the circuit made by RAY WILSON (MFOS) and also similar to the FREQUENCY CENTRAL POWER SUPPLY. DIODES IDEALLY = 1N4004 OR 1N4007 TRIM POTS = 103. Think rays circuit used 2k trimmers.

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  • what are the timmer R values?

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