jzooor

jzooor t1_j2n56uu wrote

Dimmers work by "chopping" out the lower voltage parts of the AC waveform. Every time there's a zero voltage crossing the circuit turns off until the voltage has increased enough again to turn back on at whatever set point the dimmer is set. The average (RMS) voltage is reduced because the circuit is off for some short period, but the peak voltage stays the same.

34