> Kenneth D. Grimm, K4XL wrote:
>
> >>I have the 43P kit, and it does indeed work about as you indicate.
> >>
> > Use an
> >
> >>external power supply for it, though, the thing goes through 9v
> >>
> > batteries
> >
> >>(two at a time!) like water through a sieve.
> That sounds like very poor design. The meter is only 30 uA, so even to
> keep the meter
>
> at FSD, cells should last almost forever. The electronics to keep the peak
> must
> use very little power - a precision rectifier and storage capacitor would
> probably do it. Something seems amis.
>
::Nothing's amiss, it's a really old design using active
differential amplifiers circa 1970's. <There is active circuitry in the
holdup amps.>
-WB2WIK/6
> --
> Dr. David Kirkby PhD,
> email: drkirkby@ntlworld.com
> former email address: davek@medphys.ucl.ac.uk
> web page: http://www.david-kirkby.co.uk/
> Amateur radio callsign: G8WRB
>
>
> --
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> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
--
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