RE: Self bais without cathode R?

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In Reply to: RE: Self bais without cathode R? posted by Eric Chan on July 25, 2023 at 07:45:51:

With grid leak bias the electrons are flowing out of the grid through the large value grid leak resistor and to ground so the grid is held negative with regard to ground and the cathode. So grid leak bias is negative just like cathode bias.

In a cathode bias tube the electrons flow up from ground through the cathode resistor to the cathode and then to the plate, producing a positive voltage at the cathode, and with the grid referenced to ground, the grid is negative vs. the cathode.

Tre'
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Follow Ups Full Thread

Topic - Self bais without cathode R? - Eric Chan 05:12:48 07/25/23 (6)

RE: Self bais without cathode R? - grindstone 14:40:54 07/25/23 (2)

Grid Leak bias used a lot in legacy RF circuits (nt) - gusser 09:08:29 07/26/23 (1)

And Hammond Organs (nt) - Triode_Kingdom 12:03:33 07/26/23 (0)

RE: Self bais without cathode R? - Chip647 05:50:08 07/25/23 (2)

RE: Self bais without cathode R? - Eric Chan 07:45:51 07/25/23 (1)

RE: Self bais without cathode R? - Tre' 15:23:27 07/25/23 (0)

Follow Ups

RE: Self bais without cathode R? - Tre' 15:23:27 07/25/23 (0)

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