Thread: 1920s radio
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Phil Hobbs Phil Hobbs is offline
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Default 1920s radio
On 8/26/19 10:22 PM, wrote:
A little homemade 1920s 1 valve set with direct heated triode (unmarked). I've traced most of the circuit, looks very simple. Not tried to trace the main coil assembly with its 6 connections yet. The valve has a grid leak resistor for -ve bias without C battery. It runs high R phones, no speaker. 1st question is what sort of HT voltage and/or anode current should I aim for?


NT


Probably intended for a 67 V B battery.

Cheers

Phil Hobbs

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Dr Philip C D Hobbs
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