|
Amp/Preamp Asylum Looking for a new Amp or Preamp? If you're after tubes, post over here. |
|
|
|
Amp/Preamp Asylum Looking for a new Amp or Preamp? If you're after tubes, post over here. |
|
In Reply to: Bias settings in solid state amp? adjustable, and higher would be more class "A"...? posted by Elizabeth on May 2, 2012 at 10:56:25:
There is only so much heat "dissipatable" into the circuit and its heat sinking to take quiescently and then also dynamically (possibly). Dialing the class AB bias and DC output are two of the most dangerous operations to be done, and probably needs re-biasing and re-DC-output-adjusted after each heat soaking (long re-warm period).
It's iterative if you don't just have the exact specs of current to measure against. And if you're experimenting, you are playing around outside the exact specs known to be safe. Heat sinking isn't just an art, it's a calculated science to it. It's about not frying silicon with too much power dissipation and unknown cooling factors.
If a DIY designer, it's best to have a lot of extra output transistors on hand for this process. (: One is never sure of exact quality of heat sinking contact sometimes.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Only for the designers or well informed techs. - commentary 02:48:52 05/03/12 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
