A high quality precision wound HV transformer is not
easy to manufacture. Our supplier uses a winding
machine that we had custom made by a machine tool
manufacturer in Italy at a cost of close to $350K.
The cores of the transformers are our designs with
precision machined laminations. The impregnation
process for the coil uses a custom made vacuum
impregnation process.
Hence, although one could get away with low cost
components for a low precision (low efficiency)
transformer...if you want performance, you have to
source a transformer from someone with the ability to
manufacture it.
73, Jeff W3KL
--- Steve Cook <sccook1@cox.net> wrote:
> Where can an individual purchase core material,
> paper, wire, etc? We may need to get serious about
> winding our own...
> Wonder if there is a distributor who will sell
> Hypersil C cores to hams.
> I would love to give it a try -- but can seem to
> locate anything on the Internet.
>
> -Steve
> WG7K
> ----- Original Message -----
> From: jeremy-ca
> To: Jeffrey Okamitsu ; KEVIN ADAM ; Jim Nowotarski
> ; amps@contesting.com
> Sent: Friday, December 07, 2007 3:25 PM
> Subject: Re: [Amps] Are there more Tranformer
> suppliers out there
>
>
> Anybody want to bet that Martin F Jue will buy it
> for pennies on the dollar?
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Jeffrey Okamitsu" <jokamitsu@yahoo.com>
> To: "KEVIN ADAM" <n9iww@msn.com>; "Jim Nowotarski"
> <N3GOO@arrl.net>;
> <amps@contesting.com>
> Sent: Friday, December 07, 2007 4:03 PM
> Subject: Re: [Amps] Are there more Tranformer
> suppliers out there
>
>
> > There are very few good ones.
> >
> > As the world has moved to switching power
> supplies,
> > even for high voltage, the need for precision
> wound HV
> > transformers has diminshed greatly.
> >
> > My company uses iron core transformers and
> oil-filled
> > HV caps for ferro-resonant power supplies for
> our
> > products (microwave powered lamps).
> >
> > Over the last 10 years many suppliers of these
> > components have abandoned these product lines
> for two
> > reasons:
> >
> > 1) The manufacture of these components is
> decidely
> > un-friendly to the environment;
> > 2) Decrease in demand.
> >
> > Solid-state switching power supply technology
> for HV
> > applications, although very expensive on a
> dollar per
> > watt basis, has many advantages versus iron-core
> > transformer technology:
> >
> > 1) Size/weight.
> > 2) Efficiency.
> > 3) Better EMC/EMI compliance.
> > 4) Easier supply chain management.
> >
> > I predict that within 5 years the suppliers who
> > provide my company with iron-core HV
> transformers and
> > oil-filled caps will exit their respective
> markets,
> > which is why we're moving to 100% solid-state
> > technology on our power supplies.
> >
> > 73, Jeff W3KL
> >
> > --- KEVIN ADAM <n9iww@msn.com> wrote:
> >
> >>
> >> Are there more transformer Makers out there
> if so
> >> who would be as good as peter dahl.
> >> I fell in love with 40 meter mono bander and
> tower
> >> he put up at the shop when I was stationed in
> Elpaso
> >> TX
> >> 1987-1989 even was the when lost the first
> tower
> >> that was sad to loose tower and beam.
> >>
> >> N9IWW
> >> Kevin Adam
> >> 1239 West Till Rd
> >> Fort Wayne, IN 46825
> >> _______________________________________________
> >> Amps mailing list
> >> Amps@contesting.com
> >>
> http://lists.contesting.com/mailman/listinfo/amps
> >>
> >
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> >
> http://lists.contesting.com/mailman/listinfo/amps
> >
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|