JB Cap Switch.wmv

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Uploaded by on Dec 3, 2010

Capacitor discharge to battery at 25 volts. 27 volt zener was as high as I could get locally. Both circuit grounds kept separate with an opto-isolator.

TC4427 used for logic after the opto as it switches at 2.5 volts to provide a sharp pulse to the CD4047 which then allows the pulse width to be set.

The Max845 is used to provide isolated gate drive to the two shorting FETS

Only a single coil is being driven so only three FETs are in use on the driver board.

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