Tube DIY Asylum

RE: My AC must be more than 118

63.246.183.22

Triode_Kingdom

In Reply to: RE: My AC must be more than 118 posted by DAK on August 29, 2017 at 20:47:46

Using resistors to drop B+ to the output stage will ruin the regulation of the supply. This is OK for temporary test purposes, but it will turn a good amp into junk.

--------------------------
Buy Chinese. Bury freedom.

Follow Ups:

i am not using any dropping resistors in the B+ - DAK 23:04:42 08/29/17 (1)
My Power Supply is LCLC. Then there is a 3.3K dropping resistor for the G2 voltage and then another 33K for the B+2.
So as it stands now, i have 460vdc with 6550A power tubes. I am trying to get to 440vdc. I have a suspicion that with the kt120 power tubes the B+ will be around 440 volts. Do you think 410 volts on G2 is too high?
- RE: i am not using any dropping resistors in the B+ - Triode_Kingdom 06:34:01 08/30/17 (0)
  Adding resistance on either side of the transformer degrades regulation. This is the wrong way to accomplish the drop.
  About G2, I haven't used the KT120. Someone like Jim McShane might be able to advise you regarding the practical aspects of this tube.
  
  --------------------------
  Buy Chinese. Bury freedom.
  
  Edits: 08/30/17

Post a Followup:

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.

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

Sonic Craft