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| :Hi : : It was used as a ballast resistor. The idea being a charged battery was 6 volts, tubes needed 5. As a battery discharged and voltage went down the ballast dropped less. It would act somewhat like a regulator. : :Norm Hello everyone again, As i work through this radio design and build a oneline/schematic i find that there is a 6 meg ohm grid leak resistor in the bias circuit. This is a much larger value on any battery radio that i have worked on in the past. Can someone give a simple explanation for this larger value, of course i will replace it with a 6 Meg as it is open and a bad resistor. Thank you, Mitch
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| 1927 Orpheus battery radio filament circuit | |
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