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FERNSEH · 1st Oct 2019, 12:49 pm

The attachment shows how the grid bias for the output valve is obtained. R7 and C5 smooth negative going waveform across C4. Resistors R5 and R6 serve to apply the correct grid bias for V2B.

DFWB.

1st Oct 2019, 12:49 pm	#87
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Bush TV22 with TC184 B3 converter. The attachment shows how the grid bias for the output valve is obtained. R7 and C5 smooth negative going waveform across C4. Resistors R5 and R6 serve to apply the correct grid bias for V2B. DFWB. Attached Thumbnails