Constant current sink for 6C6 cathode.

K&K Audio / Lundahl Transformers

Welcome! Need support, you got it. Or share youe ideas and experiences.

Hi all,

I hope I am not covering old ground – I have done a search and not found exactly what so…

I hope to directly couple a 6C6 pentode to a 2A3; however, 6C6 pairs can be pretty variable in the current they draw, which of course affects the voltage dropped the plate R, thereby messing with the amp’s operating points etc.

I’d like to run a K&K constant current sink in the cathode of the 6C6. How is this done – is it as simple as setting the CCS for 2.8mA (2.4mA for the plate, ~ 0.4mA for the screen), placing it between the 6C6 cathode and the usual 0V signal ground position (I use the negative leg of the screen bypass cap) and bypassing it with the usual capacitance?

Any assistance muchly appreciated.

Cheers,
Ray

"In the beginner's mind there are many possibilities, in the expert's mind there are few." Shunryo Suzuki

This post is made possible by the generous support of people like you and our sponsors:

McShane Design

Topic - Constant current sink for 6C6 cathode. - RC Daniel 00:24:44 11/05/14 (2)

RE: Constant current sink for 6C6 cathode. - KevinC 04:54:42 11/05/14 (1)

Nice. I will be in touch. Nt. - RC Daniel 10:56:49 11/05/14 (0)

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.