RE: More

RE: More

Posted by Tre' (P) on May 5, 2017 at 07:23:34

In Reply to: RE: More posted by Triode_Kingdom on May 5, 2017 at 06:39:59:

The page says "However, the figure is [labeled] 6HA5, but with a screen grid it is a 4-electrode tube, so it's not 6HA5. This is a 4-pole tube such as 6CY5, 6EA5, and 6AB9 one unit."

The point is, the internal shield of a 6gk5 looks like and does the job of the "Beam Plate" as shown in the mis-labeled image in my previous post.

It forces the tube to behave as a planar tube, conducting only where the plate to cathode spacing is parallel and controlled.

From the book (Amplifier Handbook) "incorporates beam plates to direct the flow of electrons to the desired portion of the plate"

https://books.google.com/books?id=ieFEAAAAIAAJ&focus=searchwithinvolume&q=6ha5

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

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Follow Ups Full Thread

Topic - 6gk5 users, what do you do with the internal shield? (nt) - Tre' 11:46:41 05/04/17 (15)

So I connected the internal shield to the cathode... - Tre' 16:40:37 05/04/17 (0)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Eli Duttman 12:36:16 05/04/17 (12)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Tre' 13:18:17 05/04/17 (11)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Eli Duttman 17:05:47 05/04/17 (10)

{2} 6GK5's 'should' make a superb phono stage ~nT - Cleantimestream 16:17:02 05/06/17 (0)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Tre' 19:39:56 05/04/17 (5)

More - Tre' 20:07:53 05/04/17 (4)

RE: More - Triode_Kingdom 06:39:59 05/05/17 (3)

RE: More - Tre' 07:23:34 05/05/17 (2)

Here's a diagram without the extra screen. - Tre' 07:48:18 05/05/17 (1)

RE: Here's a diagram without the extra screen. - Triode_Kingdom 13:14:12 05/05/17 (0)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Triode_Kingdom 19:31:16 05/04/17 (2)

what value for the grid stop? - Tre' 20:30:57 05/04/17 (1)

RE: what value for the grid stop? - Triode_Kingdom 06:28:14 05/05/17 (0)

RE: 6gk5 users, what do you do with the internal shield? (nt) - Triode_Kingdom 12:02:08 05/04/17 (0)

Follow Ups

RE: More - Tre' 07:23:34 05/05/17 (2)

Here's a diagram without the extra screen. - Tre' 07:48:18 05/05/17 (1)

RE: Here's a diagram without the extra screen. - Triode_Kingdom 13:14:12 05/05/17 (0)

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