[ARC5] [armyradios] Re: [Vintage-Military-RADAR] 800 Hz Static Inverters

[Tim]

Someone once suggested getting hold of one of those KW-Class audio amps
used to blow the windows out of Toyota's.  Feed it with an X00 cps sine
wave generator.  The load would be pretty "low impedance" and it might work
in principle. Of course amplifier Class A operation would be very
inefficient, maybe Class B, P-P could be an option.

Conceptually, would this work?
Tim
N6CC


On Fri, May 23, 2014 at 5:02 PM, 'J. Forster' jfor at quikus.com [armyradios] <
armyradios at yahoogroups.com> wrote:

>
>
> > On 5/23/2014 3:40 PM, 'J. Forster' jfor at quikus.com
> > [Vintage-Military-RADAR] wrote:
> >> I want to power up parts of an ASB-5 RADAR. The thing takes 800 Hz,
> >> either
> >> 80 or 115 VAC, Single Phase, roughly 500 - 1000 Watts.
> >>
> >> I've read articles on the web about modifying commercial (Asian) 60 Hz
> >> units for 400 Hz. This seems a possible alternative, but the articles
> >> referred to obsolete and unavailable converters.
> >
> > This is certainly a possibility, but will require some development
> > work. It depends on how much time you have to devote to it.
> >
> >> Does anybody know of suitable 'true sinewave' 60 or 800 Hz inverters
> >> that
> >> are currently available (used OK) that have documentation available? My
> >> guess is that not only the internal clock, but also any output filters,
> >> would need modifying.
> >
> > Sure. Behlman makes the best, [snip]
>
> Mike,
>
> I was referring to a current, modifyable one. I know Elgar and B-I make
> good iron, but I can't really deal with one of those at present.
>
> -John
>
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