Re: B+ voltage High

ANK AudioKits Forum

ANK AudioKits support forum

69.112.192.140

In Reply to: B+ voltage High posted by driguy on July 14, 2006 at 20:39:08:

First off! Make sure both tubes are drawing current. Measure the current from the cathode of each tube to ground. If you get a reading of about 9MA then you are fine. 222 is close enough. You have to account for power tranny differences and AC outlet differences as well as parts value tolerances. If you want more flexibility in lowering your voltage with the pot then put in a larger dropping resistor on the B+. Don't make the plate resisitor larger(pins 1 and 6). That affects the operation of the tube and the gain in comparison to the cathode resistor. The resistors I am talking about are in the power supply leading up to the resisitors connecting to pins 1 and 6. If you are getting the filaments to light up and nothing smells funny or blows a fuse, give it a go. You might like what you hear.

This post is made possible by the generous support of people like you and our sponsors:

Signature Sound

[ Signature Sound Lounge ]

Follow Ups Full Thread

Topic - B+ voltage High - driguy 20:39:08 07/14/06 (1)

Re: B+ voltage High - xaudiomanx 04:16:43 07/15/06 (0)

Follow Ups

Re: B+ voltage High - xaudiomanx 04:16:43 07/15/06 (0)

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.