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Registered Member #503
Joined: Sun Nov 19 2006, 06:37PM
Location:
Posts: 59
Some jargon clarification : Does crest voltage mean peak voltage ? Would this be the same as peak to peak voltage in case the voltage never goes negative ?
Registered Member #503
Joined: Sun Nov 19 2006, 06:37PM
Location:
Posts: 59
Hi MadsKaizer,
Thanks for replying. I saw the definition of crest factor, was not too sure about the crest voltage ( peak voltage ) part. I think I would have to assume that its the peak voltage on one side of 0.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
As far as I'm aware, crest voltage means the same as peak voltage. It's very rarely used, most people just say peak voltage.
As for the peak-to-peak thing, peak voltage is defined starting from 0. That means that a waveform could have different peak voltages (and hence different crest factors) on its positive and negative sides. Usually you quote the larger of the two values.
Peak-to-peak isn't really meaningful, and I prefer to avoid it altogether.
Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
Peak or peak to peak are useful in different contexts. It's easiest to measure the amplitude of a waveform on a scope if you line up the bottom peak with a graticule line and read off where the top peak comes, less error than estimating the two peaks seperately and adding or averaging. The extreme of +ve and -ve peaks being different is the waveform from a flyback.
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Crest Voltage
