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Tubes at idle - High-End Audio Discussion Forum | Audiogon ...
https://forum.audiogon.com/discussions/tubes-at-idle
The current that heats the filament will not be affected by the audio. And since nearly all tube preamps operate their tubes with class A bias, the power dissipated (consumed) by the tube, and the current passing through it (averaged over each cycle of whatever audio frequencies may be present), will be essentially the same whether a signal is ...
Tube Basics and Frequently Asked Questions – Upscale …
https://upscaleaudio.com/pages/tube-basics-and-frequently-asked-questions
When we match tubes, we are most interested in how the tube "idles" or draws current. Think of a power amp with four tubes as a car engine with four carburetors. If there is an idle adjustment for each "carb" that would be the same as an individual bias adjustment screw for each tube.
How to Measure Idle Current | DB Power Amp No Audio | …
https://www.youtube.com/watch?v=d67vLNazffM
#IdleCurrentMeasurement #Basictroubleshooting #DifficultyInElectronicsIntro made from IntroAide.The best intro editor app to create cool intro and outro vide...
How Vacuum Tubes Work
https://vacuumtubes.net/How_Vacuum_Tubes_Work.htm
Bias is a negative voltage applied to a power tube's control grid, to set the amount of idle current the tube draws. It is important to bias a tube to stay within its rated dissipation. ... THE BEGINNER'S GUIDE TO TUBE AUDIO DESIGN, by Bruce Rozenblit (ISBN 1-882580-13-3); and PRINCIPLES OF POWER, by Kevin O'Connor (ISBN 0-9698-6081-1).
Tube Matching, Bias and Breakup - How They Work …
https://blog.thetubestore.com/tube-matching-bias-breakup-how-they-work-together/
The tubes natural plate current at idle, is the starting point. The plate voltage and biasing system then adjust this natural current level up or down as required, for the operating level you want. The rated power dissipation of the tube is the limiting factor. For a 6L6GC the maximum plate dissipation is 30 watts.
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