[HeathKit] SB-200 Plate Voltage reading...

[Mark S Graalman]

  The meter will read about 150 volts high, but the 4.7 meg
resistors are a standard value and are within reason
considering the resistor tolerance is 10% anyway.
  I had a SB-200 about 25 years ago and it always read
about 23-2400 volts on the B+. I suppose the EASIEST
way to make it adjustable would be to take the 15K (memory?)
divider resistor and change it to about a 33K or so and
tack a pot acrossed it and adjust the pot for the proper reading.
Just a thought.

Mark  WB8JKR


On Thu, 04 May 2000 18:50:46 -0600 Jordan Arndt <jordana at nucleus.com>
writes:
> Hi seeing as the meter is a 200uA movement , shouldn't the dropping
> string total 15 Megs instead of 14.1 Megs with the three 4.7 Meg
> resistors..?? Seems it would make the Voltage read about 7% too
> high...
> What are you SB-200 owners reading for Plate voltage with your stock
> meter strings...??? 73 de Jordan...
>
>
> ---
> Submissions heathkit at qth.net

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