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Old 12th May 2022, 12:17 pm   #7
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: Transformer or choke and RC unit

The RC coupler was a low cost alternative to an audio intervalve transformer. You will find similar markings for P (plate/anode), HT, G (grid), GB (grid bias battery) on the transformers. The disadvantage with the RC coupling is lower load impedance and loss of gain from the transformer turns ratio.
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