• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

12ax7 voltage

Not open for further replies.


Well-Known Member
Most Helpful Member
There is a plate to cathode voltage above which the tube may arc over internally and damage the tube, which is 550V for no signal and 300V for normal operation. Is that what you mean?
Not open for further replies.

Latest threads

EE World Online Articles