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ss rectifier circuit design probs..

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  • ss rectifier circuit design probs..

    Hi there. I think the rectifier c for ircuit Ive made may be wrong somehow. Its for a 270VDC B+ for my tube preamp Ive made. It is super simple but is it a problem that the recrifier is wired (fused) to the mains?
    It goes, rectifier, 22u 500v cap, 33k res, 10u cap.
    The +ve is wired to my B+ and the -ve is wired to my signal ground. Also I am using a cheap double tap 6v mains tranny for the heaters.
    The major problem is that my -ve is 110v or more and god knows how many amps! Any help?? ... Running 250v mains from + to - I have 300v ish

  • #2
    Oh dear lord in heaven.

    You have directly rectified the mains? There are few things you can do that are more dangerous. If you want to make a circuit like that you need to run it off an isolation transformer.
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      +1
      "Take two placebos, works twice as well." Enzo

      "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

      "If you're not interested in opinions and the experience of others, why even start a thread?
      You can't just expect consent." Helmholtz

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      • #4
        Ha ha, that's what I did at the begining in 77 when I was tinkering with my Twin!!! What do I know at the time!!!

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        • #5
          An isolation transformer is vastly cheaper than a funeral

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          • #6
            nedhogan, no matter what you do, please:
            1) unplug that killer circuit you built
            2) ANSWER, say something, so we know you are still among us.
            And this this not a joke.

            EDIT: definitely not a joke.
            Forum software says last time Ned accessed or had *any* activity at this Forum (even logging in) was:
            Last Activity
            09-08-2012 01:13 AM
            50 hours ago.
            Juan Manuel Fahey

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