In Reply to: Re: Low cathode resistor bias posted by MIchael Samra on July 17, 2005 at 01:19:10:
> > All the dynacos and the HK citations and the eicos all of them use the 10 to 15 ohm resistor to bias the cathode. > >Actually all the Dynaco's that used a small, shared cathode resistor, also used a fixed negative bias supply on the grids of the power tubes. Look closer at the schematics.
In one of their pieces of literature, or in an interview I read somewhere, Hafler explained that the small resistor was found experimentally to reduce IM.
I can't vouch for all the other makers, but I'd be surprised if it wasn't the same technique.Joel
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Follow Ups
- Dynaco: it's not "low cathode resistor bias". - Joelt 07/17/0504:30:37 07/17/05 (6)
- IM - Triode_Kingdom 11:13:21 07/17/05 (5)
- Re: IM - Dave Cigna 14:07:09 07/17/05 (2)
- Re: IM - Homer Jay 15:41:45 07/17/05 (1)
- Well in that case...Nevermind. :) (nt) - Triode_Kingdom 23:56:30 07/17/05 (0)
- Re: IM - Joelt 12:53:53 07/17/05 (1)
- Re: IM, CMR - drlowmu 22:13:52 07/18/05 (0)