On Wed, 14 Jul 2004 19:01:34 -0230, "Terry"
wrote:

[explanation snipped]

Many thanks indeed, Terry. Set out that way, I'll have no trouble
remembering which way around it works in future,which will certainlybe
a first!
The only other question which arises is: having got the correct turns
ratio established; how does one determine the minimum number of total
turns needed to make a transformer that will actually give a
reasonable performance? For example, why pick say T50:T150 if you can
get away with T10:T30? The ratio in each case is the same, but I'll
wager there's a performace price to be paid by going for the
fewer-turns option! Anyone know?

--

"What is now proved was once only imagin'd." - William Blake, 1793.