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.
John, WA5BXO -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Monday, December 11, 2006 10:28 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Component ID please Jack... That looks more like a shunt to me. Rick Jack Schmidling wrote: > The HV meter on my supply does not work and the series resistor inside > seems to be open. No problem but there is another component across > the resistor that I have never seen before and assume is a cap but > don't know.. it also reads open. > > I posted a pic at http://schmidling.com/meter.jpg for ID. > > As an aside, the resistor is quaintly marked "Precision" but the value > is "1/2 meg" which is hand written in like at NBS. No decimal point, > just 1/2 meg. What is really bazaar is the accuracy is 2%, also hand > written. When was that ever precision? > > js > ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
