Hello Andrew .... A local chap I see.... I to live in Kent UK

Basically this is an off line high power smps (switch mode power supply).

Below is an overview of the process :-
Low voltage oscillator that signals mosfet drivers that switches high power
mosfets that alternates 400vdc into the primary which inducts into the
secondary (low voltage high current) which alternates work coil (lower
voltage higher current) that finally inducts eddie currents into the
workpiece causing friction = heat

Some issues arise from ringing, frequency matching the workpiece, safe
cooling of workcoil, making it safe for public use and finally making it
look sexy. ;-)

Regards
Steve.


"Andrew Mawson" wrote in message
...

"sme" wrote in message
...
Dear Group,

I am posting this message in an attempt to gauge interest for a project
I
have been working on.
I have been a hobbyist of metalworking for some time and currently
posses
a
lathe and CNC milling machine which I enjoy the use of very much.
I have also cast metal using traditional foundry methods (gas /
charcoal)
and this is what seeded my interest for this project.

I have designed an induction furnace which is currently in it's testing
stage.
Initially this furnace was not going to see light of day out side of my
own
workshop but while demonstrating it to a friend he showed a great deal
of
interest and mentioned that many like minded hobbyists may be interested
in
such a device.

So I guess I am posting this to gauge interest from the group and seek
advice to what value both from usage and monetary you would put on it.

I would like to apologise in advance if members of this group see this
post
as a form of spam. Please be assured that this is not my intention.
I agree it would be nice to make a little cash out of ones hobby and
give
up
the office job ;-)

Regards,
Steve.



Steve,

Add me to your 'interested' list - induction heating has been a 'must get
round to it someday' back burner project for years. What are you using as
the switching element and what is your upper power limit?

Andrew Mawson
Bromley, Kent, UK