Just find sensei Sakuma Susumu ultra-simple 211 + 211 " rare pearl "
MJ0001_(5)211-para-single-power-amp_SakumaS.pdf - Google Drive
Genius design DHT amplifier
What Diyers the very best " diamant " interesting article example is ?
MJ0001_(5)211-para-single-power-amp_SakumaS.pdf - Google Drive
Genius design DHT amplifier
What Diyers the very best " diamant " interesting article example is ?
New schematic diy projects are available today
MJ1708_(05)6BX7GT-5998A-PP-amp_SoyaS.pdf - Google Drive
MJ1708_(04)845-single-pre-main-amp_SakumaS.pdf - Google Drive
and few others...
Greetings
MJ1708_(05)6BX7GT-5998A-PP-amp_SoyaS.pdf - Google Drive
MJ1708_(04)845-single-pre-main-amp_SakumaS.pdf - Google Drive
and few others...
Greetings
Second part of new schematics was update. This one and more..
r-tec1708_(02)KT88(T)-single-amp_ShiodaH.pdf - Google Drive
Have fun
r-tec1708_(02)KT88(T)-single-amp_ShiodaH.pdf - Google Drive
Have fun
Good point in diy spirit you can open dedicated thread about this amplifier and share your better creative solution.
Is for inspire your way of making
All tubes projects was build by Diyers , tested and work amplifiers.
Is not virtual software simulation is verified true analog only.
Sure not perfect for every body but generous gifts
Is for inspire your way of making
All tubes projects was build by Diyers , tested and work amplifiers.
Is not virtual software simulation is verified true analog only.
Sure not perfect for every body but generous gifts
Attachments
The whole Passionate Tube Amplifier site is pretty good, especially the All Differential Push-Pull Amplifier section.
http://our-house.jp/4-400/index.htm
just browsing around web, and suddendly this......
g2 gets some punishment... 2kv 35w screen can survive that ? ( i hope)
just browsing around web, and suddendly this......
g2 gets some punishment... 2kv 35w screen can survive that ? ( i hope)
He must be a crazy guy. He wrote some crazy experiments and circuits in his website. Worth reading or even looking pictures.
http://our-house.jp/vtm/index.htm
I want to try reducing heater power he trying if it does not much shorten valve life. How do you guys think? If the space charge is too less for the anode current,the cathode will be damaged by itself or the contaminated ion, IIRC? But how much? current, heater power, cathode thermal resistance and cathode temperature? In fact it should be avoided, I suppose...
http://our-house.jp/vtm/index.htm
I want to try reducing heater power he trying if it does not much shorten valve life. How do you guys think? If the space charge is too less for the anode current,the cathode will be damaged by itself or the contaminated ion, IIRC? But how much? current, heater power, cathode thermal resistance and cathode temperature? In fact it should be avoided, I suppose...
I guess there is a limit, e.g, 15%, on how much you can lower the filament voltage before shortening the life of the tube. I think his experiments basically confirmed what the old texts said.
Thank you. I found old Hitachi's article on the internet. Although it is very small voltage and current amplification application, it suggest operationg point of 12AX7
Ip 1mA Vh 6.3V or 12.6V
Ip 100uA Vh 4.5V or 9.0V
Ip 10uA Vh 3.4V or 6.8V
This is more steep change than I thought. Lowering heater voltage seems not a good thing.
I do make little exception and show Tamasan 22 Diy works :
Tamasan 22
We can find few schematics inside of his blog but not so many.
Amplifiers are from tiny battery powered , OTL's to huge transmitter tubes monsters.
Extraordinary and out of limits. Attention !!!!
Tamasan 22
We can find few schematics inside of his blog but not so many.
Amplifiers are from tiny battery powered , OTL's to huge transmitter tubes monsters.
Extraordinary and out of limits. Attention !!!!
Attachments
-
A2B51F1F-5057-480B-82B7-8ABDA8484310.JPG103.8 KB · Views: 1,817
-
12DAC035-2BE5-4D37-A1B9-8A3B2BB11801.JPG134.9 KB · Views: 1,816
-
6E6E42B0-892E-4034-9156-6DA4706AF25F.JPG96.2 KB · Views: 1,446
-
6B0E4433-40A0-4D8C-99AF-84ACC3915980.JPG93.3 KB · Views: 1,421
-
DD9FEFEE-FE39-4DCD-B126-C04F2335BE07.JPG68 KB · Views: 1,413
-
4814A55D-14A8-4948-9F90-11837F3257DF.JPG109.2 KB · Views: 660
-
254A65A5-CDC5-4969-9429-DA385B0A3572.JPG190.2 KB · Views: 790
-
66CF8D89-C846-40C7-9EEE-31A88A9BE273.JPG117.4 KB · Views: 694
-
F019386C-A90C-4DAF-A98F-4413CC292B94.JPG487.6 KB · Views: 768
-
F3A137AA-0CF9-42E4-BB08-C20FEA0AC836.JPG136.5 KB · Views: 772
Bunch of schematics from sensei Susumu Sakuma
Schematics sensei Sakuma
Direct Heating
GM70 triode Amplifier Kit
YouTube
sensei Sakuma video
Schematics sensei Sakuma
Direct Heating
GM70 triode Amplifier Kit
YouTube
sensei Sakuma video
Attachments
- Home
- Amplifiers
- Tubes / Valves
- Gold mine of DI¥ audio tubes schematics from Japan