Valve tester
I suppose one of the classic designs such as AVO or Taylor could be partially copied for measuring anode current and gm . Measuring leakage would be another matter and would complicate the design greatly . If using only 6.3V and 12.6V filaments and anode/screen voltage of 100 and 250 , it could be built very simply . Most types could be tested this way . The main disadvantage to a DIY design is calibration and how to implement each socket/pinout (I would suggest a single octal socket and build an adapter for each type)
316a
I suppose one of the classic designs such as AVO or Taylor could be partially copied for measuring anode current and gm . Measuring leakage would be another matter and would complicate the design greatly . If using only 6.3V and 12.6V filaments and anode/screen voltage of 100 and 250 , it could be built very simply . Most types could be tested this way . The main disadvantage to a DIY design is calibration and how to implement each socket/pinout (I would suggest a single octal socket and build an adapter for each type)
316a
Tesatador para tubos electricos.
Ola!,
No necessitara construir este testador lo que es cosa bastante complicada, seria mucho mas facil comprarlo en los Estados Unidos o en Inglaterra, por ejemplo.
Usted deberia tener cuenta de la tension red AC de los U.S. que no corresponde con la nuestra.
En los U.S. se utilisan 115/120VAC y en Europa 220/240 VAC., sin duda lo sabe ya usted.
Marcas connocidas son AVO, Hickok y muchas otros...
Lo mejor seria, en mi opininion de comprar algo mas recen como este que hacen la gente de Trancendent Audio.
Si necessita mas informacion, por favor, que usted lo diga.
Con mucho gusto y desculpe usted mi Espagnol llenado de faltas,
English translation for other members on request. ( I'm feeling laZ)
Cheers,
Ola!,
No necessitara construir este testador lo que es cosa bastante complicada, seria mucho mas facil comprarlo en los Estados Unidos o en Inglaterra, por ejemplo.
Usted deberia tener cuenta de la tension red AC de los U.S. que no corresponde con la nuestra.
En los U.S. se utilisan 115/120VAC y en Europa 220/240 VAC., sin duda lo sabe ya usted.
Marcas connocidas son AVO, Hickok y muchas otros...
Lo mejor seria, en mi opininion de comprar algo mas recen como este que hacen la gente de Trancendent Audio.
Si necessita mas informacion, por favor, que usted lo diga.
Con mucho gusto y desculpe usted mi Espagnol llenado de faltas,
English translation for other members on request. ( I'm feeling laZ)
Cheers,
There a couple "tester" kits on the market. Hagerman & Rosenblitz to name the 2 i know.
I have also seen a chapter in an old radio manual on building test rigs for tubes. And attached is a pic of a simple tester from a letter to the editor in Glass Audio .
dave
I have also seen a chapter in an old radio manual on building test rigs for tubes. And attached is a pic of a simple tester from a letter to the editor in Glass Audio .
dave
Attachments
Hi,
Thanks Dave,
I had completely forgotten about that GA article, it has its' limitations though...then again most testers can't test all valves anyway.
Whether it's cheaper to build than to buy an old/new tester is open to debate IMHO.
Personally I have a pair of Hickock TV7s and I wouldn't want to have to live without them.
Cheers,
Thanks Dave,
I had completely forgotten about that GA article, it has its' limitations though...then again most testers can't test all valves anyway.
Whether it's cheaper to build than to buy an old/new tester is open to debate IMHO.
Personally I have a pair of Hickock TV7s and I wouldn't want to have to live without them.
Cheers,
Hi,
Five, allowing some refreshment courses and keeping in mind you're never going to reach any level close to your mother tongue.
IME, when you can make jokes in a language other than your mother tongue, you can safely say you speak it.
BTW, an aunt mine taught 19 different languages at university...one good reason for me to take a low profile.
In the math department I really admire guys like our young Tim though (Schematic something), promising young chap.
Just 16 and already blowing torches at the elder...
Thank you for enquiring though,
Five, allowing some refreshment courses and keeping in mind you're never going to reach any level close to your mother tongue.
IME, when you can make jokes in a language other than your mother tongue, you can safely say you speak it.
BTW, an aunt mine taught 19 different languages at university...one good reason for me to take a low profile.
In the math department I really admire guys like our young Tim though (Schematic something), promising young chap.
Just 16 and already blowing torches at the elder...
Thank you for enquiring though,
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