Tube DIY Asylum: RE: Please teach me this cathode bypass question by cpotl Do It Yourself (DIY) paradise for tube and SET project builders.

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Posted by cpotl (A ) on March 28, 2021 at 17:19:05

In Reply to: RE: Please teach me this cathode bypass question posted by Eric Chan on March 28, 2021 at 17:01:46:

"What is the reason that schematic A and B would behave the same?"

Because the two schematics just represent the reordering of two subsystems that are connected in series. One of the subsystems is the 300 ohm resistor, and the other subsystem is the 3K ohm resistor in parallel with the capacitor. The analysis of the behaviour of the two subsystems in series is identical regardless of which of the two is nearer to the cathode.

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