|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
|
|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
In Reply to: RE: A lot of the depends on the tester you are using and its operational points posted by tomcy6 on July 1, 2016 at 09:35:31:
If they used the voltage and current specified on the data sheet, transconductance should match too - so 12AX7 at 250V, 1.2 mA should be 1600, at 100V, 0.5 mA should be 1250. Some tubes will have a graph of transconductance vs. current - for instance the GE data sheet shows 400 at 0.1 mA, 1900 at 2.0 mA (both at 100V). All these in micromhos, or uA/V (same thing. Move decimal left three places for millimhos or mA/V.
Edits: 07/01/16
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: A lot of the depends on the tester you are using and its operational points - Tom Bavis 18:22:22 07/01/16 (3)
- RE: A lot of the depends on the tester you are using and its operational points - tomcy6 13:42:11 07/02/16 (2)
- Tom..These aren't the specs the 12AX7s are running at. - Michael Samra 18:36:23 07/03/16 (0)
- RE: A lot of the depends on the tester you are using and its operational points - baileyler 18:12:42 07/03/16 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
