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IBEW 915 Electrician
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115 Posts
Discussion Starter #1 (Edited)
If you have a DC power supply you should see what you see on a battery but possibly have some ripple due to AC source not being filtered. This should be similar to an alternator/rectifier system on a car or a stator/rectifier system on a bike.

If you can put a DC meter on your battery while the bike is running, can't you use a standard O'scope in the same manner to check the health of your stator by observing the waveform of the output? The D C meter will only give you the DC component of the voltage.

If the stator is healthy it should present a nice sinusoidal waveform with a given P to P voltage? How much of an AC component should you see at the battery terminals?

I have a couple of O'scopes laying around gathering dust.
 

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Premium Member
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508 Posts
You are correct a scope will picture the wave form both before and after the rectier. Also a meter can be used on AC and give you a pretty good idea of the RMS voltage.
 
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