[Amps] SB220 Meter blown...follow up hope
Jim Thomson
jim.thom at telus.net
Sat May 16 10:51:34 EDT 2020
Date: Fri, 15 May 2020 14:12:57 -0500
From: Paul Kraemer <elespe at lisco.com>
To: amps at contesting.com
Subject: Re: [Amps] SB220 Meter blown...follow up hope
<That will certainly test the meter movement!? It will pin hard once that
<then you will know it is bad.
<NEVER TEST A METER MOVEMENT WITH A OHMMETER!
<Paul K0UYA
## Never had a problem so far..with my fluke 87 across meter movements..and they were 0- 1 ma types, if I remember correctly.
I think this was with 87A manually switched to lower scales.
## I used to wire rvs connected diodes across both plate and also grid meter.
These days I just wire the rvs diodes.. between B- and chassis. In some cases
2 diodes are used in series... 4 in total.
In some cases, a resistor is wired in series with each rvs connected diode...that was a
W6WRT trick..which works good.
Jim VE7RF
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