Home Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

RE: Too low plate R value for a triode ? and CCS substitution?

Depends on the application. For plate loads it's hard to beat the simplicity of the cascode MOSFET. K&K Audio's kits are very convenient and cheap. Highly recommended. The IXYS MOSFETs that Kevin uses sound better in this application than DN2540s. Do note that these CCSs work best with currents in excess of 10mA and voltages greater than 30V across them. Although I have had good results using them as plate loads for 6SN7s with only 4.5mA. As to the voltage, in addition to the 30V for the CCS you will need to allow for the signal swing. E.g. if you require 20V peak to peak signal swing then you would need 50V across the CCS.




"It is better to remain silent and thought a fool, then speak and remove all doubt." A. Lincoln


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


Follow Ups Full Thread
Follow Ups
  • RE: Too low plate R value for a triode ? and CCS substitution? - JKT 12:18:56 03/28/17 (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.