The different suffix,11, may mean it is a variant for special purpose,for instance,high frequency use. I am sure some member of the forum will know this.
Actually, I have just looked at the ones you mean(which I have not tried) and they seem to be large value lower voltage without the usual glass sealed steel case.
I did not see post number 2- yes,probably no oil!
Actually, I have just looked at the ones you mean(which I have not tried) and they seem to be large value lower voltage without the usual glass sealed steel case.
I did not see post number 2- yes,probably no oil!
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K42Y-2 is a PIO capacitor ?
Friends
Some time ago I got a lot of K42Y-2 tubes in ebay.
I make a comparation with a old ( 60´s) brazilian made PIO capacitor( the brand make this oil capacitor until today here) and the brazilian sound best...this K42Y-2 is really PIO or for the russians sellers PIO is Plastic In Oil ?
In ebay have a confusion and few information about the material used in this russian capacitors...
Aldovan
Friends
Some time ago I got a lot of K42Y-2 tubes in ebay.
I make a comparation with a old ( 60´s) brazilian made PIO capacitor( the brand make this oil capacitor until today here) and the brazilian sound best...this K42Y-2 is really PIO or for the russians sellers PIO is Plastic In Oil ?
In ebay have a confusion and few information about the material used in this russian capacitors...
Aldovan
Here is some info from Russian book:
Low voltage, low frequency caps:
Low voltage, low frequency caps:
Paper: КБГ (КБГ-И, КБГ-МН, КБГ-МП), ОКБГ (ОКБГ-И, ОКБГ-МН, ОКБГ-МП. ОКБГ-М), БГТ, К40П-2, К40У-5, К40У-9, К40-11, БМ-2, БМТ-2
Metallized paper: МБГ (МБГП, МБГЦ), МБГИ, МБГН, МБГО, МБГТ, МБГЧ (МБГЧ-1, МБГЧ-2), МБМ, КМБП, К42У-2, К42П-5, К42Ч-6, К42-4, К42-8, К42-11, К42-18, К42-19
That's all I can findMetallized paper: МБГ (МБГП, МБГЦ), МБГИ, МБГН, МБГО, МБГТ, МБГЧ (МБГЧ-1, МБГЧ-2), МБМ, КМБП, К42У-2, К42П-5, К42Ч-6, К42-4, К42-8, К42-11, К42-18, К42-19
Very useful information.
I'm actually surprised at how well google translate worked on this page - it's completely readable..
Very useful information.
I'm actually surprised at how well google translate worked on this page - it's completely readable..
Except 76, it is lacquer-film.
Google translate gets better and better, thanks to many contributors. I myself contribute almost every time I see incorrect translation. I wish my English would improve so fast.
Wavebourn, no need to apologize for your English; your written skills are much better than the verbal skills of many native American English speakers I know.
I recently completed a VTA ST-70 build, and I went with the Russian PIO cap upgrade. I can't say they made a difference as I didn't hear the amp before installing them. I can say the amp sounds very nice. I was struck by their physical size though. They're relatively huge!
I recently completed a VTA ST-70 build, and I went with the Russian PIO cap upgrade. I can't say they made a difference as I didn't hear the amp before installing them. I can say the amp sounds very nice. I was struck by their physical size though. They're relatively huge!
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I use K75-10. It is claimed as oil (PILO). It has a rating up to 800V DC (500V AC), instead of K42 that only 250V DC OR 160V AC (CMIIW).
I use B+ of around 220V DC, this voltage is marginal.
Thx,
Ervin L
Just for information,
Do these capacitors contain PCB?
Polychlorinated biphenyl - Wikipedia, the free encyclopedia
This link is for those that may not be aware of PCB's used in some components!
Regards
M. Gregg
Just for information,
Do these capacitors contain PCB?
Polychlorinated biphenyl - Wikipedia, the free encyclopedia
This link is for those that may not be aware of PCB's used in some components!
I am not aware if Soviet capacitors ever contained PCB. Paraffin, bee's wax, mineral oils - what I've seen there.
I have used either K75-10 or K75-24 in every amp I have built but always as either bypass caps for the power supply electrolytics or in the snubbing network in choke input PSU. I think it would be hard to find better caps for this purpose.
I guess they might also be suitable for parafeed caps.
Ervinl; K40U-9 and K42U-2 are available up to 1600V. Excellent eflog seller Dmitriy Kolevatov (user name uralspirit) has good selection at higher voltage and is happy to sell small numbers.
I guess they might also be suitable for parafeed caps.
Ervinl; K40U-9 and K42U-2 are available up to 1600V. Excellent eflog seller Dmitriy Kolevatov (user name uralspirit) has good selection at higher voltage and is happy to sell small numbers.
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