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Light bulb dimmer

Kevin Weddle

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SCR dimmers aren't used in practice because an SCR onle passes half the AC cycle so them maximum power available is 50%. We studied only an SCR dimmer in college because it's easier to understand and veiw the waveform on a scope.

A neon lamp and diac are electrically the same thing, the reach a certain breakdown voltage and then turn on, this is needed to make the triggering of the traic more reliable.

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