Bias?

2nd harmonics for the masses

Bias?

Postby JimDaBomb » Tue Jul 08, 2014 6:16 pm

Does the 6B4G GSG need biasing? Can it be biased? I'm clueless about this stuff. I'm guessing it doesn't as there are no pots to do so but perhaps there's another way I don't know of?
JimDaBomb
 
Posts: 16
Joined: Mon Jun 09, 2014 6:22 pm

Re: Bias?

Postby EWBrown » Wed Jul 09, 2014 3:30 pm

The bias voltage is generated by the current flow through 900 ohms "cathode" resistor, it sets the 6B4G's biasing (K to F voltage differential)

This is also known as "self biasing", no adjustments necessary, as would be with fixed biasing.

HTH

/ed B
Last edited by EWBrown on Thu Jul 10, 2014 7:37 am, edited 1 time in total.
Real Radios Glow in the Dark
User avatar
EWBrown
Insulator & Iron Magnate
 
Posts: 6389
Joined: Wed Mar 19, 2003 6:03 am
Location: Now located in Clay County, NC !

Re: Bias?

Postby JimDaBomb » Wed Jul 09, 2014 5:41 pm

Awesome, good to know. I was confused since I had read somewhere that SET amps didn't need biasing but then I was looking at Line Magnetic amps and seeing their SET amps with bias pots so I wasn't sure what to expect. The GetSetGo I built is the first tube amp I've ever owned so I still have a lot to learn. Thank you.
JimDaBomb
 
Posts: 16
Joined: Mon Jun 09, 2014 6:22 pm


Return to get*set*go

Who is online

Users browsing this forum: No registered users and 6 guests

cron