Re: Ohms Law Calculation
I think this guys formula may be in error. When considering RMS. The full wave is considered. That is above and below Gnd. One only has so much RMS power in this wave. If I rectify the wave the amount of power does not change except for the loss in rectification components. By this guy changing the frequency to 120 Hz the formula will not hold true as nothing was changed in RMS power. It is still the same consideration of power except now it is above the line. The ripple voltage needs to be consider as 120 Hz because this is the frequency of the ripple and hence the cap to smooth the ripple will be delta time for this sawtooth waveform. Because the waveform has changed I would say the RMS formula for the 60Hz of 120 Hz can no longer be used because we are not considering the full wave form but a component of ripple that has changed in nature from the original. I would think a calculus equation would have be derived to amount of energy giving at this time period because the area under the curve has changed?
Originally posted by budm
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