Re: [Amps] WD7S lack of HV circuit ?

[Aleksandar Petkovic via Amps <amps@contesting.com>]

Thanks. I found that wayback site but could not make head or tail of it. 
Even after watching the how to video. It made no sense to me.
I eventually found WD7S stuff but when I clicked on the particular links 
in the list, it brought up a calendar showing how many times it has been 
captured. Pretty meaningles and of no use.
I gave up on it and accepted that I'm just too dumb.🙂

73, Alek VK6APK.


On 2/06/2024 7:55 pm, Bill Weinel wrote:
> All of this information is still available online from the Internet 
> Archive Wayback machine.
> 73 Bill W4WHW
>
> On 6/2/24 04:51, Ulf (SM0NOR) wrote:
> > Is it the "WD7S PRODUCTIONS HIGH VOLTAGE POWER SUPPLY BOARD HV-2" you 
> > are looking for?
> > I have the pdf. I managed to download most of the stuff by 
> > wayback-machine a few years ago.
> > 73 - SM0NOR
> > ________________________________
> > Från: Amps<amps-bounces@contesting.com>  för 
> > jim.thomjim.thom@telus.net  <jim.thom@telus.net>
> > Skickat: den 31 maj 2024 15:58
> > Till:amps@contesting.com  <amps@contesting.com>
> > Ämne: [Amps] WD7S lack of HV circuit ?
> >
> > WD7S, on one of his boards he sold, was made to shut things down in the
> > event of loss of B+.
> > If I remember correctly, it resembled a mess of series resistors, 
> > like you
> > would use to meter HV, (without the meter), and an extra smaller value
> > resistor, in series at the cold end.  The V drop across the small value
> > resistor was like 5-7 vdc.... and was applied to the rest of the 
> > circuit.
> > When the B+ dropped below a given threshold, the circuit tripped, and
> > kicked the amp offline...like opening off the keyline etc.  I think 
> > it used
> > a spt, or dpdy mech relay..that was always operated, with B+ turned 
> > on.  I
> > think the coil was opened off when the circuit tripped.
> >
> > I can't find the original schematic for this board anywhere.
> > Does anybody have any info on it ?
> >
> > Jim  VE7RF
> > _______________________________________________
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