Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: kagliostro on August 22, 2012, 08:38:19 am

Title: How to identify a tube ?? - Try this
Post by: kagliostro on August 22, 2012, 08:38:19 am

Sometime happen to have a tube whose label was deleted

as to identify it you can try to look to photo of labeled tubes

http://www.tubemongerlib.com/gallery2/ (http://www.tubemongerlib.com/gallery2/) (my previous post http://www.el34world.com/Forum/index.php?topic=14149.0 (http://www.el34world.com/Forum/index.php?topic=14149.0))

or use the little code printed near the bottom of the tube

http://www.leradiodisophie.it/Download/PhilipsCodeListAB-v10.pdf (http://www.leradiodisophie.it/Download/PhilipsCodeListAB-v10.pdf)

(http://www.leradiodisophie.it/Immagini-8/valvola%20sconosciuta.jpg)


K