Paul Taylor said:
Hi i was looking for a bit of advice! I have built a dual +/-15v power
supply running from a 18v 225VA torodal on 2 separate windings, I am
pulling 4.5A on the positive side and approx 0.5A on the negative side,
the positive rectifier is cooking i tried replacing this with an 8A one
and it still does it has anybody else come a crossed this and know what
the problem is, i have checked that the windings are in phase and wired
correctly i can post a full schematic on request.
Thanks Paul
it will dissipate about the same amount of heat,
that heat needs to go somewhere
too hot to touch doesnt mean its too hot,
if it realy burns you the instant you touch it that probably means it is too
hot.
ive tried using synchronous mosfet rectification and it can be quite
effective at reducing dissipation,
but its perhaps a tad overcomplicated unless you realy need it.
Colin =^.^=