>>A 555 MAY be able to do most of this by itself. Prove it :-)
>
>Many years ago I designed a motor speed controller using 556, one timer
>configured as an fixed fequency astable, triggering the other timer
>configured as a monostable with variable pulse width (using the control
>voltage input).

Russell
I worked at the DSIR in Gracefield, Wellington, for a couple of years, and
one of the projects there was a 5V 10A switch mode supply (primarily to get
experience with mains switchers) and it was done with a couple of 555's
exactly like this. We did it back in the late 1970's.

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