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varying duty cycle on a power inverter

varying duty cycle on a power inverter

varying duty cycle on a power inverter

(OP)
I have a circuit for a modified square wave inverter switched by a 555 astable driving two banks of mosfets (via alternate outputs on a 4017 counter) switching 12v into an 8-0-8 transformer primary. Question: how can I add variable duty cycle for current control? can I just alter the 555 timer to a fixed frequency/variable duty cycle design or will that "upset" the 4017? what would be an alternative design?
 Thank you.

RE: varying duty cycle on a power inverter

The simplest would be to use a dual timer
The oscillator drives the second one acting
as a single shot with voltage controlled
duty cycle.

<nbucska@pcperipherals.com>

RE: varying duty cycle on a power inverter

Suggestion: Provide more info about the variable duty cycle, e.g. discrete/digital or analog, etc.

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