|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
|
|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
In Reply to: Some priorities! posted by grhughes on January 25, 2006 at 07:18:53:
You really need to find someone who is familiar with electronics like a Ham Radio enthusiast or another audio DIY builder to guide you through some safety precautions. Maybe a local vocational technical school might be a start. Some amplifiers are auto biasing in that they use "cathode bias" and the tubes manufacture their own bias (as they age they loose this ability). Some amplifiers use "fixed bias" which must be set with a potentiometer. Another crucial thing to understand is that there are lethal voltages present in an exposed chassis especially around the filter electrolytic capacitors. Biasing and attaching the vom leads to the ouput tubes cathode resistors are in a relatively safe area of the circuit and generally you're measuring small voltages (but every amp is unique in how the bias is set and at what voltage). Just never turn the amp on without a load on the outputs. Ray
"I take you as you are
And make of you what I will,
Skunk-bear, carcajou, bloodthirsty
Non-survivor.
Lord, let me die but not die out." THE LAST WOLVERINE by James Dickey
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- More.... - grhughes 08:07:47 01/25/06 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
