|[AMRadio] Component ID please|
rickbras at airmail.net
Mon Dec 11 11:54:28 EST 2006
Dang! You're right again, John! I now see the series wiring. Good call.
John E. Coleman (ARS WA5BXO) wrote:
>No, look again, it is internal series multiplier, so that the meter will
>read volts with a direct hookup. If this is a 0-500 Volt meter as the
>picture seems to indicate, and multiplier was 500,000 ohms then the meter
>movement would have been a 1ma movement. I see no reason for a capacitor to
>bypass the resistor, maybe the meter but not the resistor. So perhaps the
>other device was another resistor to adjust the value so that the meter is
>more accurate than it was with just the one resistor. It may also be for
>temperature compensation. Both could be removed and the one milliamp
>movement used with an external resistor arrangement or divider. With the
>proper circuitry and switch it could be a 0-500 milliamp or 0-5KV.
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