diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Tubes / Valves (http://www.diyaudio.com/forums/tubes-valves/)
-   -   KT88s and grid current (http://www.diyaudio.com/forums/tubes-valves/119826-kt88s-grid-current.html)

SpreadSpectrum 21st March 2008 06:31 PM

KT88s and grid current
 
How do KT88s perform in AB2(triode connected)? Anybody ever done it? Dumb idea?

Bandersnatch 21st March 2008 07:00 PM

hey-Hey!!!,
Heathkit and McIntosh ran them to grid current in W6m, MC60 and MC75 designs. I can't see why triode connection would pose any significant trouble.
cheers,
Douglas

SpreadSpectrum 21st March 2008 07:17 PM

I was mainly concerned with:

1. Grid dissipation. There is a potential to drive the grid quite a ways positive when triode connected. Don't know if this would cause harm.

2. Grid stopper, which I kind of thought was necessary. However, the designs you pointed out omit them.

Bandersnatch 21st March 2008 07:33 PM

hey-Hey!!!,
Grid stopper resistors would create distortion due to the voltage developed across them as grid current flowed. As yu noted, where it is reasonably expected, they are left out.
cheers,
Douglas


All times are GMT. The time now is 12:53 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2