[sdiy] Transformer question

[Metzger, Michael A]

So my quick and dirty "circuit" isn't sound? Uh, no surprise there (look at
ground, cough)  You guys have got me wanting to take the toothbrush apart now. A
quick glance when I bought it showed the handle part to be put together pretty
well. I don't want to break it. Maybe I can get into the base, though. Maybe
something for this weekend.

Mike


-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Paul Perry
Sent: Thursday, July 22, 2004 7:45 PM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Transformer question


You need a closed (or as closed as possible) magnetic loop,
and for any kind of efficiency that means a core of
transformer iron or similar.
All I can imagine working, is two U sections, with the tops
of the Us facing each other across the gap.
(or, similarly, a number of these).

Although, the 'receiving' side could simply be a slab of 
'lossy' magnetic material, if you were just boiling water.

paul perry Melbourne Australia