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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Low cathode resistor bias posted by Doug Flynn on July 16, 2005 at 21:47:01:
Doug
Low value cathode bias is very common and nothing new.All the dynacos and the HK citations and the eicos all of them use the 10 to 15 ohm resistor to bias the cathode.Usually tho there is a negative voltage applied to the control grid.Im not typically a proponet of cathode bypass being odd order harmonics are canceled in the PP stage anyway.If your using a SE config tho your almost forced to use a bypass cap.
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Follow Ups
- Re: Low cathode resistor bias - MIchael Samra 07/17/0501:19:10 07/17/05 (29)
- Re: Low cathode resistor bias - Ray Moth 17:51:20 07/18/05 (7)
- "solely"? Nope. - Joelt 05:12:09 07/19/05 (6)
- Re: "solely"? Nope. - Ray Moth 06:30:21 07/19/05 (5)
- Re: "solely"? Nope. - Joelt 07:00:40 07/19/05 (4)
- Re: "solely"? Nope. - Ray Moth 19:56:39 07/20/05 (0)
- Have to disagree on this one - Triode_Kingdom 08:32:56 07/19/05 (2)
- Re: Have to disagree on this one - Joelt 08:43:07 07/19/05 (1)
- Not good enough - Triode_Kingdom 12:29:45 07/19/05 (0)
- Re: Low cathode resistor bias - jdarg 13:54:14 07/18/05 (12)
- Re: Low cathode resistor bias - MIchael Samra 10:32:39 07/19/05 (0)
- Re: Low cathode resistor bias - Joelt 05:09:02 07/19/05 (10)
- Re: Low cathode resistor bias - MIchael Samra 10:33:24 07/19/05 (0)
- 15.6 ohms was used.... - Russ57 07:09:31 07/19/05 (8)
- Re: 15.6 ohms was used.... - dave slagle 19:21:22 07/19/05 (0)
- Re: 15.6 ohms was used.... - Joelt 07:44:44 07/19/05 (6)
- Re: 15.6 ohms was used....The way its figured is - MIchael Samra 17:14:28 07/19/05 (0)
- Page 10, last two paragraphs, of the Dynaco 70 assembly instructions - Russ57 10:14:43 07/19/05 (3)
- Re: Page 10, last two paragraphs, of the Dynaco 70 assembly instructions - Kyle K 11:20:30 07/19/05 (2)
- And all intended to give a voltage of 1.56VDC(nt) - Russ57 12:17:45 07/19/05 (1)
- Bingo! (nt) - Kyle K 12:46:41 07/19/05 (0)
- Re: 15.6 ohms was used.... - Kyle K 10:09:51 07/19/05 (0)
- Not sure what you mean - Mark Kelly 18:39:52 07/17/05 (0)
- Dynaco: it's not "low cathode resistor bias". - Joelt 04:30:37 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)
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