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- Tue Apr 23, 2024 5:09 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
- Sun Apr 21, 2024 3:47 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
- Sat Apr 20, 2024 10:29 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
Re: Mullard EL38 Triode connected.
Definately not. I dont need my utracer anyway as Ive discovered the late great Patrick Turner had trod the path before me. Ive put my operating point at the top 5k6 loadline. Patrick had put some stuff down at the bottom left. I measured 3.7 watts. Im thinking change from E88 Cc to EL38 driver, eith...
- Thu Apr 18, 2024 1:33 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
Re: Mullard EL38 Triode connected.
Ok now I’m in sefenth heaven. This amp is a keeper. Well thats my R core 5K6 into 8 ohm output transformers bagged for good. So now I’ll definately have to use the Sowter push pull transformers for the next project. Maybe I should do push pull 45? I was planning to use a lesser PP transformer for a ...
- Thu Apr 18, 2024 12:45 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
Re: Mullard EL38 Triode connected.
Strong looking fat bottles with big Kathode. Loving the sound.
- Thu Apr 18, 2024 12:43 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
- Thu Apr 18, 2024 12:30 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650
Re: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
That makes sense.
- Thu Apr 18, 2024 12:26 pm
- Forum: Everyones Projects
- Topic: Mullard EL38 Triode connected.
- Replies: 13
- Views: 667
Re: Mullard EL38 Triode connected.
I did some assessment looking at the el37 triode cathode bias compared to its pentode bias. Studied the el38 pentode bias resistor, made me judge 300 oms. Found that a good idea. Had 29 watts so throttled down to 25 w dissipation . All good. Its the right way up at last. Very happy. Not putting the ...
- Thu Apr 18, 2024 6:30 am
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650
Re: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
Moral in the story is. I asked a guy called Mike who I believe was the Son of one of the big valve dealers. May have been Chelmer, I knew at the time though. Doesnt Mattaer. I said to Mike, “what is going to happen to our valves. (I meant will the go up i. Price of will they go down as the generatio...
- Thu Apr 18, 2024 6:02 am
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650
Re: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
But its better than knowing nothing. Is it though? I can see some merit for 2nd, but for 3rd and 4th, knowing nothing is to my mind, better than knowing something that is likely to be wrong, but not knowing if its wrong, and by how much. And of course thats before you ask if knowing 2nd-4th is enou...
- Wed Apr 17, 2024 8:16 pm
- Forum: Everyones Projects
- Topic: OK…so I’m on wi’ summat
- Replies: 193
- Views: 44295
Re: OK…so I’m on wi’ summat
Well you have to find the biggest fook off choke you can find for choke input. This one is a cube showing the EL34 to show how enormous it is. Because this power transformer is 500mA dc capable. So every other part has to be that capable. Youre case isnt so extreme. But success with chokes isnt an a...
- Wed Apr 17, 2024 8:08 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650
- Wed Apr 17, 2024 7:59 pm
- Forum: Assorted Stuff
- Topic: General health matters.
- Replies: 794
- Views: 203623
Re: General health matters.
Anti emitic and very expensive when I was a nurse. Only given then to people on chemo.
- Wed Apr 17, 2024 7:42 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650
Re: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
Well the formula we have to accept right or wrong. But measuring errors could be mine. If the printer the artist the actual taking of measurements were right. It would be better to have a table of numbers and process those through the formula. But just as I have nothing to go on but a visual drawing...
- Wed Apr 17, 2024 6:09 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 650