In Reply to: Re: just a thought... posted by Eli Duttman on March 18, 2007 at 03:25:46:
"The need to keep instantaneous plate potential above g2 potential never goes away."That is an impossible need to meet, in either UL or pentode mode. At full signal, the plate voltage will swing from close to 0v up to twice B+. How can the screen voltage always be lower than that?
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Follow Ups Full ThreadTopic - Why do some people dislike UL? - Ray Moth 14:12:56 03/17/07 (77)
- Maybe - because - Gingertube 20:49:25 03/20/07 (0)
- Because it is flawed thinking. - JLH 06:45:33 03/19/07 (3)
- Re: Because it is flawed thinking. Well maybe not so flawed... - Steve O 12:10:26 03/19/07 (2)
- Re: Because it is flawed thinking. Well maybe not so flawed... - JLH 18:15:10 03/19/07 (1)
- Re: Because it is flawed thinking. Well maybe not so flawed... - Steve O 20:07:16 03/19/07 (0)
- I'm not one of them - Gingertube 20:23:55 03/18/07 (0)
- Re: Why do some people dislike UL? - garymuffley@fuse.net 16:49:42 03/18/07 (0)
- McIntosh Got It Right with Cathode Feedback - Triode_Kingdom 16:31:22 03/18/07 (2)
- Re: McIntosh "criss-crossed" screens... - Steve O 17:36:10 03/18/07 (1)
- A clever explanation! [nt] - Ray Moth 10:18:19 03/19/07 (0)
- Because they don't use enough other NFB paths - -3db 15:54:04 03/18/07 (0)
- Because in my own extensive tests, it lost information... - Allen Wright 04:34:26 03/18/07 (16)
- NFB in general is problematical ... - Naz 17:30:00 03/19/07 (0)
- I totally agree. "it lost information" - JLH 07:03:35 03/19/07 (3)
- Excellent JLH !! (nt) - drlowmu 11:08:44 03/19/07 (2)
- Re: Excellent JLH !! (nt) - Ray Moth 19:17:52 03/19/07 (0)
- Re: Excellent JLH !! (nt) - Ray Moth 19:15:04 03/19/07 (0)
- Re: Because in my own extensive tests, it lost information... - Eli Duttman 05:36:29 03/18/07 (10)
- That sounds similar ! - cheap-Jack 09:41:35 03/19/07 (6)
- A good example of what I meant - Ray Moth 10:14:13 03/19/07 (5)
- No, U-L was invented by Alan Blumlein in 1937, - cheap-Jack 10:45:07 03/19/07 (4)
- Re: No, U-L was invented by Alan Blumlein in 1937, - Ray Moth 19:04:44 03/19/07 (2)
- Good question on "Ultra-Linear". - cheap-Jack 13:39:39 03/20/07 (1)
- Misinformation - fatbottle 03:46:15 03/22/07 (0)
- Now that's a ref. I'd really like to read! - Try-ode 11:07:10 03/19/07 (0)
- never had easy acccesss to such transformers - and... - Allen Wright 06:00:13 03/19/07 (0)
- also - Try-ode 06:06:31 03/18/07 (1)
- I don't - it's only used in pure triode amps (nt) - Allen Wright 05:58:46 03/19/07 (0)
- Re: Why do some people dislike UL? - hahax@verizon.net 22:05:02 03/17/07 (17)
- UL is cheaper than properly implemented true pentode. - sser2 22:40:49 03/17/07 (16)
- Re: UL is cheaper than properly implemented true pentode. - Jim McShane 19:03:01 03/18/07 (15)
- We are DIY here. - sser2 22:14:22 03/18/07 (2)
- Re: We are DIY here. - Jim McShane 06:42:26 03/19/07 (1)
- Yes! - Try-ode 07:09:53 03/19/07 (0)
- Citation II - Triode_Kingdom 21:29:32 03/18/07 (11)
- Re: Citation II - Jim McShane 06:21:20 03/19/07 (10)
- Sorry, I don't see the basis for your statement.. - Triode_Kingdom 08:17:54 03/19/07 (9)
- Re: Sorry, I don't see the basis for your statement.. - Jim McShane 08:51:17 03/19/07 (8)
- Re: Sorry, I don't see the basis for your statement.. - Triode_Kingdom 21:04:06 03/19/07 (5)
- Re: Sorry, I don't see the basis for your statement.. - Jim McShane 07:16:08 03/20/07 (0)
- Re: Sorry, I don't see the basis for your statement.. - Jim McShane 06:45:45 03/20/07 (0)
- Re: What UL did better for Citation II - Mahatma Kane Jeeves 04:14:01 03/20/07 (2)
- Nonsense - Triode_Kingdom 06:22:08 03/20/07 (1)
- Re: Nonsense - Mahatma Kane Jeeves 10:19:14 03/20/07 (0)
- Was the reason because when the transformers he ordered were delivered - Ivan303 17:46:05 03/19/07 (1)
- Re: Was the reason because when the transformers he ordered were delivered - Jim McShane 19:14:27 03/19/07 (0)
- just a thought... - Dave Cigna 17:36:35 03/17/07 (17)
- Re: just a thought... - Eli Duttman 03:25:46 03/18/07 (3)
- Re: just a thought... - Ray Moth 03:59:56 03/18/07 (2)
- Re: just a thought... - Eli Duttman 05:23:47 03/18/07 (1)
- If 32V Vp idle over g2 "significant" enough? - cheap-Jack 12:31:04 03/19/07 (0)
- Re: just a thought... - Try-ode 18:55:33 03/17/07 (12)
- Good point! - Dave Cigna 16:09:55 03/18/07 (6)
- But!!! - Try-ode 18:10:53 03/18/07 (5)
- Re: But!!! - Steve O 19:45:39 03/18/07 (4)
- still, But!!! - Try-ode 06:01:05 03/19/07 (3)
- oops... - Try-ode 06:53:30 03/19/07 (2)
- It's not exactly the same.... - Dave Cigna 12:52:37 03/19/07 (1)
- Re: It's not exactly the same.... - Try-ode 15:49:41 03/19/07 (0)
- Re: just a thought... - Ray Moth 03:19:29 03/18/07 (4)
- Re: just a thought... - Try-ode 04:50:58 03/18/07 (3)
- Re: Forbidden methods? - Dave-A 09:53:42 03/18/07 (2)
- Re: Forbidden methods? - Try-ode 15:05:43 03/18/07 (1)
- Hi Douglas...;-) /n - Ivan303 15:45:52 03/18/07 (0)
- 3 reasons why UL is inferior to triode or pentode. - sser2 16:12:09 03/17/07 (8)
- approching triode operation with pentode power - Ralph 11:17:03 03/19/07 (4)
- Re: approching triode operation with pentode power - Ray Moth 19:11:44 03/19/07 (3)
- Re: approching triode operation with pentode power - Jim McShane 06:59:52 03/20/07 (2)
- Re: approching triode operation with pentode power - Ralph 09:34:04 03/20/07 (1)
- Re: approching triode operation with pentode power - Jim McShane 13:34:12 03/20/07 (0)
- Reason No. 4 - Triode_Kingdom 16:23:52 03/18/07 (0)
- Re: 3 reasons why UL is inferior to triode or pentode. - Ray Moth 03:13:56 03/18/07 (0)
- Re: 3 reasons why UL is inferior to triode or pentode. - Eli Duttman 03:08:02 03/18/07 (0)
- Re: Why do some people dislike UL? - Poindexter 15:12:09 03/17/07 (2)
- Re: Why do some people dislike UL? - Ray Moth 03:24:08 03/18/07 (1)
- My admittedly subjective take; - Poindexter 20:11:33 03/18/07 (0)
- Re: Why do some people dislike UL? - sorenj07 14:19:07 03/17/07 (0)
Follow Ups
- Re: just a thought... - Ray Moth 03:59:56 03/18/07 (2)
- Re: just a thought... - Eli Duttman 05:23:47 03/18/07 (1)
- If 32V Vp idle over g2 "significant" enough? - cheap-Jack 12:31:04 03/19/07 (0)