The handbook is sitting right next to me and I still don't see the math I'm
looking for. I need the equation that I can fill in to determine the high
voltage when I know the value of the string and the output of if, no meter
involved other than a VOM to check the output of the divider. See what I'm
saying now?
Just a comment also on the handbook, a lot of you guys keep referring to it
as the bible, well I have five editions of it and I still can't find some of
the info that you guys know in it, and that's even with searching the .pdf
version of it on the computer once I know the answer! Seems to me the
handbook is a bit lacking.
Thanks and 73,
Scott KBØNLY
----- Original Message -----
From: "Bob Maser" <bmaser@tampabay.rr.com>
To: "KB0NLY" <kb0nly@mchsi.com>; <amps@contesting.com>
Sent: Sunday, March 01, 2009 2:25 PM
Subject: Re: [Amps] HV Divider, Problem Solved
>I gave you the answer in my previous. Read about measuring voltage using a
> ammeter, which is what you are really doing. Find a 1ma full scale
> AMMETER
> and use 5 megohms in the meter multiplier string. When you connect the
> AMMETER across the 100K ohm resistor and it will give you a full scale of
> 5000V(1MA on the AMMETER. If you insist on using the 10 megohm string
> then
> you will have a meter that is giving you a full scale of 10,000 volts.
> Read
> the Handbook.
> Bob W6TR
> ----- Original Message -----
> From: "KB0NLY" <kb0nly@mchsi.com>
> To: <amps@contesting.com>
> Sent: Sunday, March 01, 2009 8:15 PM
> Subject: [Amps] HV Divider, Problem Solved
>
>
> Well i don't know how this amp was working before i started the
> modifications but i pulled the resistor from B- to chassis ground, at an
> AMPS member suggestion, to measure it, it was open! So i grabbed an new
> wirewound vitreous resistor out of the drawer and put it into place and it
> now works perfectly and i have 11.68v off the divider.
>
> I'm not totally clear on the math here though, so if someone wanted to
> comment here is my remaining question..
>
> I have 10 1M ohm resistors in series, so 10,000,000 ohms, and i have
> 11.68v
> off the divider. How do i reverse the math to determine the value of the
> high voltage knowing the output of the divider? See what i'm saying? I
> know what i measured before using the HV meter, and i know what i have
> after
> the divider, just wanted to see if they match up.
>
> I have a level that will work with the board now, but i want to understand
> it better.
>
> Thanks and 73,
>
> Scott KBØNLY
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
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