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  1. #1
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    Simple AC mains regulater with overvoltage and overcurrent protection

    Would somebody be kind to tell me about an AC Mains(220 or 120VAC) regulating circuit capable of delivering up to 600W with overvoltage and overcurrent protection? Thanks in advance...Simplicity is critical!
    Last edited by ahakim; 17th May 2013 at 22:33.

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    Re: Simple AC mains regulater with overvoltage and overcurrent protection

    Many moons ago, there used to be something called ferroresonant regulators. Google the term.

    They were completely passive, only a capacitor and a transformer. However, the transformer design was quite complex.

    Edit: Ferros are still being produced, and widely available online
    Last edited by schmitt trigger; 17th May 2013 at 23:28.



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  3. #3
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    Re: Simple AC mains regulater with overvoltage and overcurrent protection

    Quote Originally Posted by ahakim View Post
    Would somebody be kind to tell me about an AC Mains(220 or 120VAC) regulating circuit capable of delivering up to 600W with overvoltage and overcurrent protection? Thanks in advance...Simplicity is critical!
    For overcurrent protection use fuse.

    Overvoltage / Undervoltage protection (voltage stabilization) use transformer with many taps, circuit will switch corresponding tap according to mains voltage. You can search EDABoard existing threads, there is lots of threads with this topic and circuits.


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    Re: Simple AC mains regulater with overvoltage and overcurrent protection

    The proposed mutiple-tap transformer solution: yes it's simple, but requires the use of switching relays, ...
    Thanks anyway.
    Last edited by ahakim; 20th May 2013 at 06:41.
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    Re: Simple AC mains regulater with overvoltage and overcurrent protection

    Quote Originally Posted by ahakim View Post
    The proposed mutiple-tap transformer solution: yes it's simple, but requires the use of switching relays, ...
    Thanks anyway.
    No need for relay, triacs can be used to.

    By the way relay is not expensive.
    “Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.” Nikola Tesla



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  6. #6
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    Re: Simple AC mains regulater with overvoltage and overcurrent protection

    You're right,relays are cheap. I'm talking about "awkwardness" of regulation by "adding" or "subtracting" av voltage by steps, which is not very satisfactory. Also lifetime of relays (continuous switching)...Yes triacs would be much better...

    Thanks tpetar...
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