> Yep. =A0Then note that there are two capacitors that bridge the
> isolation boundary - treat them as being in parallel.

In series, I think, in this context.

_____________

Added factor here is ratio of pump capacitor to floating store cap.
Affects delta change which output can achieve per cycle. (Obvious but
can cause issues in some applications). Here where a power supply is
being created there is no problem. For using this as a FET gate drive
the response time will be affected. (Again, obvious, but ...)
________________

The higher the pump frequency the lower that the capacitor sizes can
be and the higher the achievable mains rejection.

__________

This circuit is useful for eg powering the simple digital panel meter
IC's which demand that the IC float at the measuring voltage
potential. Many such panel meters are offered for sale without enough
information provided on how to power them.





                 Russell

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