<Anyway, why does it have to be one transformer? Why not a 12-0-12 for the
<16V lines and a 6V one for the 8V line (those should produce DC voltages
<within the range of any normal S100 board regulator). Such transformers
<are trivial to obtain.
Then you'd end up with the piece of crap altair supply...
<There is a myth doing the rounds that PSUs -- even simple linear PSUs --
<are impossible to design. No idea where it came from...
Because any error means all your silicon is junk. Also if you make a
small error the core you using could get quite hot. Or maybe the ripple
from switching exceeds the reasonable level by say a volt or two. Then
there are the high current ground loops that cause instability at
something approaching max load or minimum load. The worst is when you
forget the chopper side has 300V on it, S*!^^ d_at_**. The number of
errors that can be made are far higher. Then again having designed a
few, once you've done it you learn... mostly everything they taught you
was far from enough. that and fixing all those that were really not so
well designed.
Allison
Received on Tue Aug 17 1999 - 21:01:43 BST