K&K Audio / Lundahl Transformers

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

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: CCS with Cathode Resistor in a long tail ?

Posted by KevinC on September 19, 2016 at 04:25:59:
Unfortunately, you would still need the -15V supply, in fact the Compact Cascode CCS would be returned to the -15V supply and there would be no ground connection as is shown in your existing schematic.

I have no idea why he used 470R cathode resistors and a common CCS. It's not something I have tried.

The change to two CCSs was probably so that the balance between the two halves of the driver could be precisely adjusted by means of the pot. I prefer to select matched triodes. 6N6Ps are cheap!