4 ms·
A lot of electric ranges do the same thing, which is incredibly annoying. I mean, the 60 Hz is right there; why are they blasting in 10 second intervals?
by thfuran 3y ago
A lot of electric ranges do the same thing, which is incredibly annoying. I mean, the 60 Hz is right there; why are they blasting in 10 second intervals?
- lazide 3y agoI suspect for electric ranges they've historically used relays instead of solid state triacs or the like? [https://electronics.stackexchange.com/questions/279752/why-are-relays-still-used-in-electric-ovens https://electronics.stackexchange.com/questions/279752/why-a...] If so, relays have significant switching times and limited cycle counts due to arcing - especially under load. Enough that sub-second switching times will wear them out pretty quickly, and also be annoyingly loud. At the power levels we're talking about for a resistive stove, solid state is expensive. At the voltages we're talking about, it's also not trivial to do in a reliable way using solid state techniques (240V RMS =~ 340V peak).
- thfuran 3y agoSCRs are used for industrial stuff with much larger loads than a consumer stove. Regular relays definitely are the wrong thing to use for high speed switching though.
- lazide 3y agoThanks for the pointer - a quick google showed SCRs in the 30+ AMP 240 volt range (minimum useful for even a small range) at well over $1k. That sound about right?