However for AT LEAST 40 years, theatre and d0m3stic dimmers have used semiconductors to chop the waveform.
They therefore use similar principles, theatre dimmers are normally of larger capacity, remotely controlled, and better suppresed, but contain the same basic circuit.
A d0m3stic resistance dimmer for a load of a few hundred watts would be a bulky item since it would have to disipate 100 watts or more, it certainly would not fit a standard mounting box.
Resistance dimmers are not much used these days
This post has been edited by adam2: 04 February 2012 - 03:46 PM