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Noise-free decoupled power supply

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  • Noise-free decoupled power supply

    Hi all,

    during my last waiting time in the lounge in Dubai, I came out with this idea to decouple the power supply of stomp boxes in order to avoid hum-loops. I've done some sims I want to share, and ask if someone else has done something similar.

    Basically from one single tap we can get:
    - one main output, directly connected to the tap, for the high current requirement (around 1 A);
    - as many outputs as needed decoupled by a couple of 220 uF 25 V bipolar caps, then to a regular power supply with low current requirement (I've simulates a CCS with 100 mA here).

    Then of course a standard 7809 (/12/15/18) and then 100 n to the stomp box.

    The sims has been done with 14 Vrms as a voltage supply.

    Has enyone done something similar?
    Attached Files
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