Quote:
Originally Posted by Sideband
Good info given there. If you are not sure about calculating the current, all you do is measure the voltage across the 220 ohm and then divide the voltage by the resistance and the result will be in amps...so for instance if the 220 ohm has 10 volts across it the result will be 0.045 amps which is 45 milliamps. This is the TOTAL current through the valve and also includes the screen grid current. Alternatively, measure the anode current directly by connecting your meter in series with the 700 ohm dummy load.
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Does the wattage of the dummy load of two 1.5K resistors in parallel matter ? The new 1W 220 ohm resistor is now in place.