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Philco 90: expecting too much?
02-09-2010, 06:31 PM
Think of it as a voltage divider. If your old fashioned voltmeter had a sensitivity of 1000 or 2000 ohms per volt, and you had a really large value resistor between the plate and the B+, then you would be almost shorting out the circuit when you measured the plate voltage with the meter. E=IR, and the current is so small, ere the measurement error of yesteryear.
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Messages In This Thread
Philco 90: expecting too much? - by Guest - 02-05-2010, 01:28 AM
Re: Philco 90: expecting too much? - by Ron Ramirez - 02-05-2010, 07:49 PM
Re: Philco 90: expecting too much? - by Guest - 02-05-2010, 08:41 PM
Re: Philco 90: expecting too much? - by Ron Ramirez - 02-05-2010, 10:57 PM
Re: Philco 90: expecting too much? - by Guest - 02-06-2010, 11:34 PM
Re: Philco 90: expecting too much? - by exray - 02-07-2010, 09:48 AM
Re: Philco 90: expecting too much? - by Ron Ramirez - 02-07-2010, 12:42 PM
Re: Philco 90: expecting too much? - by 7estatdef - 02-07-2010, 04:01 PM
Re: Philco 90: expecting too much? - by 7estatdef - 02-07-2010, 04:19 PM
Re: Philco 90: expecting too much? - by 7estatdef - 02-07-2010, 05:07 PM
Re: Philco 90: expecting too much? - by codefox1 - 02-07-2010, 05:45 PM
Re: Philco 90: expecting too much? - by Guest - 02-08-2010, 12:27 AM
Re: Philco 90: expecting too much? - by 7estatdef - 02-08-2010, 08:59 AM
Re: Philco 90: expecting too much? - by codefox1 - 02-09-2010, 06:31 PM
Re: Philco 90: expecting too much? - by Ron Ramirez - 02-15-2010, 11:09 AM
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