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Hiwatt Classic 100 power section

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  • Hiwatt Classic 100 power section

    I have a Hiwatt Classic 100 I'm working on, it's working OK but I noticed a lot of AC ripple on the HT1 and HT2 lines, less on the HT3 line. I'm just wondering how much should I expect, I'm not getting any hum but I know the screens and OT center tap are getting that A/C and if I should be concerned about it. I had replaced the four diodes right off the PT.

    All the filter caps look like they've been replaced not too long ago, they are LCR brand.

    Thanks
    -kdawg

    http://mhuss.com/Hiwatt/Schematics/DR_100wOutput.pdf

    http://mhuss.com/Hiwatt/Schematics/DR_100wPS.pdf

    http://mhuss.com/Hiwatt/Schematics/DR_Pre4Input_v1a.pdf

  • #2
    numbers. what are the numbers? Some ripple is normal but what is a lot?

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    • #3
      Ok here's what I got:

      HT1 - 2.0 VAC
      HT2 - 0.54 VAC
      HT3 - 0.11 VAC

      -kdawg

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      • #4

        That's *nothing*
        Juan Manuel Fahey

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