[Amps] Dual power supplies in EB104 4X MRF150 design

[Anthony Rick]

Thanks for the replies.

It appears that the series option may be the best logistically as far as I
have investigated.  I even wonder about pulling the boards from four PC
power supplies that can be had for very little and placing them in a series
configuration.  This would provide 12, 24 and 48 VDC ouputs if needed.

With so much of these computer/networking supplies available it is worth
some ingenuity to find a way to utilize them.
Anthony

On Wed, Apr 9, 2008 at 11:52 AM, Oleg Skydan <sov1178 at rambler.ru> wrote:

> Hi, Rick!
>
> Try to look for the 24V/20A supplies and use two with series connection...
>
> Kind regards,
> Oleg
> 73 de UR3IQO
>
> ----- Original Message ----- From: "Anthony Rick" <asrick at gmail.com>
> To: <amps at contesting.com>
> Sent: Monday, April 07, 2008 7:34 PM
> Subject: [Amps] Dual power supplies in EB104 4X MRF150 design
>
>
>   Hi all,
> >
> > I'm working on building a solid state amp based on the EB104 design, and
> > cheaply.  The only constraint that is causing problems is the power
> > supply.  It appears that a single 50V/20A is going to be pretty
> > expensive
> > while 48V/10A supplies are readily available as telecom surplus for
> > pretty
> > cheap.  Looking at the EB104 schematic (
> > http://www.communication-concepts.com/eb104.htm) it seems probable to
> > power
> > each MOSFET pair from a separate supply with only the need for an
> > additional
> > isolation capacitor.
> >
> > Unfortunately the supplies I am seeing, usually Lambda, are not designed
> > for
> > parallel operation so that easy alternative is not an option.
> >
> > Any thoughts?
> >
> > Thanks,
> >
> > Anthony
> > NR9R
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> >
>
>