4 Jul
2008
4 Jul
'08
1:52 p.m.
Roy J. Tellason wrote:
If you're talking about a full-wave (4-diode)
bridge across a 9V winding you
can get the same result by using two diodes with an 18V winding. For the
other, where what you want is only 9VAC, you can use half the winding,
just one end and the center tap and not use the other end.
That would be ideal. Just remember that the 18V winding will be rated
for half the current that a 9V winding would have been, and that still
applies even if you only use half the winding. In this case I'd
definitely follow Tony's advice and get a transformer rated for 50VA
(18V at 2*1.4A) or more.
Philip.