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The Natural Philosopher[_2_]

On 08/06/2019 10:21, wrote:
The RMS voltage is halved - the voltage profile stays the same for one half-cycle (hence same RMS for this portion) and is zero for the next half-cycle, so the average over a full cycle is halved (ignoring diode voltage drop). Nonetheless, the confusion on this point accidentally gets the correct answer that the half-cycle version of 240v is effectively equivalent to 170v in terms of power, but thats because for a resistive loud the power consumption goes as v^2 (ignoring any temperature dependence of heater resistance)

Its all a matter of definition. RMS volts is, strictly I guess, heating
power, but in a weird waveform it doesnt make much sense to think in
those terms.

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No Apple devices were knowingly used in the preparation of this post.