Re: SMPS inverter voltage feedback methods

On Jan 27, 4:09 pm, Terry Given <my_n...@xxxxxxxx> wrote:
Joerg wrote:
MooseFET wrote:
[...]
To monitor the waveform? Why not just sample it? Send sampling pulse
through toroid xfmr,
[....]

I cant quite picture it, would you care to cough up an ascii schematic?
didnt unitrode make a chipset that did prettty much this?
Here's what was rattling through my mind while I was thinking about
how to do this.



ACFB+ ! ! ACFB-
+-/\/\--+
! !
(((((((
=======
(((((((
! ! !
! -- ! ---------+--/\/\/---- +Vout
! ! !
!/ \! \
!! ----------! !---- /
Drive ---- !! ( !\e e/! ! \
) !! ( ! ! ! !
) !! ------------+-------+----- ! --+----------- -Vout
) !! ( !
GND ------ !! ( !
!! ---------------------------


This works even in the AC case if the resistors bring the voltage low
enough that the EB junctions aren't breaking down while the
transistors trade off conducting.
.

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