LED Dimmer - What should be used for Switching?

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  1. - 3rd November 2012, 16:41 #1
    sayzer's Avatar
    sayzer
    sayzer is offline SuperMod
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    Default Re: LED Dimmer - What should be used for Switching?

    ok.

    First, we multiply AC voltage by 0.9.
    then, we multiply the result by 1.41.

    There, you have the result for DC voltage.

    In our case here,
    we muliply 220VAC by 0.9 = 198
    then we multiply 198 by 1.41 = 279VDC.

    This calculation is for full bridge rectifier with an elec-cap.
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  2. - 4th November 2012, 00:31 #2
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    Default Re: LED Dimmer - What should be used for Switching?

    Quote Originally Posted by sayzer View Post
    First, we multiply AC voltage by 0.9.
    Why?? .....
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