[Amps] SB220 Meter blown...follow up hope

[Jim]

Agreed Lou.


Thanks
73
Jim W7RY

On 5/16/2020 3:42 PM, gudguyham--- via Amps wrote:
> I measure meters with my digital ohm meter at least a few times a week and have been since I had high impedance ohm meters.  Never blew up a meter yet.  Of course you have to know how to do it.
>
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>   On Saturday, May 16, 2020, Jim Thomson <jim.thom at telus.net> wrote:
>
> 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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