CCS better in plate or cathode

astouffer · 19th November 2006, 11:56 PM

Forgive me if this has been answered before, but what is the difference between adding a CCS to the plate or cathode of a triode? I would like to get some more gain from a 417A and the IXYS chip looks like the way to go. Putting it in the cathode would dercrease the dissapation and probably not require a heatsink. Any comments?

SY · 20th November 2006, 02:43 AM

In the plate circuit, the CCS will cause the stage to have a gain of the tube's mu. In the cathode, it will cause the stage's gain to be near unity. I suspect you want the former...

19th November 2006, 11:56 PM	#1
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	CCS better in plate or cathode Forgive me if this has been answered before, but what is the difference between adding a CCS to the plate or cathode of a triode? I would like to get some more gain from a 417A and the IXYS chip looks like the way to go. Putting it in the cathode would dercrease the dissapation and probably not require a heatsink. Any comments?

20th November 2006, 02:43 AM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	In the plate circuit, the CCS will cause the stage to have a gain of the tube's mu. In the cathode, it will cause the stage's gain to be near unity. I suspect you want the former... __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

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