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Thread: Power supply protection

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    Power supply protection

    How to protect the power supply against over voltages or surge voltages?

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    Please do suggest this will be useful for my online electrical course studies

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    Quote Originally Posted by shamsharma View Post
    How to protect the power supply against over voltages or surge voltages?
    For mains input you can use a varisor for over voltage or surge voltage. This element has a specified threshold voltage of which it will go short circuit when the specified voltage is reached and normally blows a fuse. Usually for a mains input voltage of 230vac we use a varistor rated at around 275vac.

    I hope this helps

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    This guy came crying here for help and wasn't even decent enough to say thank you

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