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 1902...hmmmmm did it go oink oink boom when it blew up? - Rohith Surampudi [more] |
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| 1902...hmmmmm did it go oink oink boom when it blew up? - Rohith Surampudi [more] |
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#7
16-02-2012, 16:32
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Re: Voltage vs. PercentVbus
The PWM cycle is (I believe) 50KHz so a DC meter will read the average and indeed show 6V. But that is not reality. If you use a scope, in "normal" operation, you will see a 50KHz squarewave (ignoring inductance distortion for clarity) with a 50% on/off duty cycle, and the the squarewave will be between 0V and 12V. In a stalled case, depending on fuses, inductances, etc, for a CIM, you will likely see whatever the CIM windings R is over a 12V battery before the fuse blows or the Jag shuts down thermally.
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