> How many devices and or push pull pairs did they use for the
> power involved?
I'd be interested in that info, too.
> I do know using FET's you can get by with one push-pull circuit
> and paralell FET's on both sides. This is a big advantage over
> using transistors and having multiple push-pull circuits with
> splitters and combiners.
It looks like Advanced Power Technology has some 300 volt VDMOS
FETs that do 750 watts in modes A-E (ARF1505). A push-pull
pair of them would be very close to legal limit (US) from one
module. Two of those modules could be run at 75% ratings with
splitter/combiner or in push-pull to generate a conservatively
rated legal limit device. Of course with 17 dB gain, an ARF1505
amplifier would require a drive stage (or the 400 watt FT-9000
<G>).
Anyone know what the devices cost?
73,
... Joe, K4IK
>
> *********** REPLY SEPARATOR ***********
>
> On 4/21/05 at 4:49 PM Vic Rosenthal wrote:
>
> >R@contesting.com;Measures wrote:
> >
> >> What kind of efficiency? What DC supply V?
> >
> >60%, 60V. Advanced Power Technology FETs.
> ><http://www.advancedpower.com/>
> >
> >--
> >73,
> >Vic, K2VCO
> >Fresno CA
> >http://www.qsl.net/k2vco
> >
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