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Thread: PSUD guru required

  1. #1
    Join Date: May 2009

    Location: Southampton

    Posts: 415
    I'm Rob.

    Default PSUD guru required

    Hi
    Iím after someone experienced in PSUD to optimise my SIT amps power supplies.
    Currently running a CLC but not sure if my choke at 2.5mH/10amp is correct replacing a 1ohm/100w resistor in a CRC config.
    Any help appreciated
    Rob

  2. #2
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 5,687
    I'm Alan.

    Default

    Your 2.5mH choke is only equivalent to a 1.5 ohm resistor, so no real change.

    Can you get a choke with 10's of mH with the required current rating?
    Last edited by Firebottle; 26-03-2021 at 07:10.
    I love Hendrix for so many reasons. He was so much more than just a blues guitarist - he played damn well any kind of guitar he wanted. In fact I'm not sure if he even played the guitar - he played music. - Stevie Ray Vaughan

  3. #3
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 5,687
    I'm Alan.

    Default

    Alternatively you could go CLCLC if you have the space.
    I love Hendrix for so many reasons. He was so much more than just a blues guitarist - he played damn well any kind of guitar he wanted. In fact I'm not sure if he even played the guitar - he played music. - Stevie Ray Vaughan

  4. #4
    Join Date: May 2009

    Location: Southampton

    Posts: 415
    I'm Rob.

    Default

    Hi Alan
    Thanks for that here is the cct diagram for ref


  5. #5
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 5,687
    I'm Alan.

    Default

    OK. What voltage drop do you get across the 1 ohm in normal operation?

    Do you have something like a 2A current flow through the SIT?
    I love Hendrix for so many reasons. He was so much more than just a blues guitarist - he played damn well any kind of guitar he wanted. In fact I'm not sure if he even played the guitar - he played music. - Stevie Ray Vaughan

  6. #6
    Join Date: May 2009

    Location: Southampton

    Posts: 415
    I'm Rob.

    Default

    Hi Alan R1 is replaced with the 2.5mh choke never measured the voltage drop across R1 .
    The current Id is adjustable sweet spot is around 2.5amp can run it to max 3amp

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