|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: Grid leak R in PP output stage posted by Uncle Clyde on January 25, 2007 at 10:07:03:
grid resistor value in combination with Miller capacitance will determine high frequency rolloff of the stage. Because pentodes have very low Miller capacitance, high value grid resistor is OK, and that's why pentodes present easy load for a driver. But triode connection with its high Miller capacitance requires much lower grid resistor for the same high frequency extension. While pentode may be fine with 500 K or even 1 M, the same tube triode-connected will require 10 times less, at least. This can be calculated by figuring equivalent impedance of Miller capacitance at various frequencies.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Other than safe tube operation, - sser2 09:42:41 01/26/07 (1)
- Re: OK, what about grid chokes.... - Ivan303 06:23:09 01/29/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
