I have found "Cornell Dubilier" (CDE) and Dubilier
Cornell Dubilier Electronics, Inc. - Your Source for Capacitor Solutions
Dubilier - Capacitors
and I will ask by both - Thank you for your advice
Maybe this link gives you an Idea.
According to it, DB simply means "Dauerbetrieb" indicating that this snubbers are meant for continuous operation. There are also "Anlaufbetrieb" capacitors. To prevent damage in field repairs of Motors the capacitors were labeled to their usage type... (These Replacements typically would have been done by mechanics, not electricians, so a reasonable saftey measure).
This would explain why dispite quite a number of threads in numerous Forums no one ever came up with the correct Vendor 🙂
Mike
According to it, DB simply means "Dauerbetrieb" indicating that this snubbers are meant for continuous operation. There are also "Anlaufbetrieb" capacitors. To prevent damage in field repairs of Motors the capacitors were labeled to their usage type... (These Replacements typically would have been done by mechanics, not electricians, so a reasonable saftey measure).
This would explain why dispite quite a number of threads in numerous Forums no one ever came up with the correct Vendor 🙂
Mike
I talked a bit by phone and have heard follow:
The logo "db" is an abbreviation.
The associated brand name was the German surname (family name) "DörrBeck" - a small German manufacturer of high quality capacitors, mainly for the use in horizontal fly back stages (arround the "BU" transistors in televisions).
A picture you will find in post #1.
This brand wasn't purchased or overtaken by a new company.
This means, that the background knowledge of this company isn't available for others.
There are no broshures, folders, datasheets, publications or other printed material on the web.
This means, only the released reports (news) and advertisements in vintage electronic magazines from those days is available.
Perhaps one of the members can look for this (1970s and 1980s).
about the thread
http://www.diyaudio.com/forums/soli...rrently-available-electr-audio-magazines.html
I have listed some magazines.
BTW - the colloquial term for this device here in Germany by the most suppliers was "Booster Kondensator" (PLASTIC FOIL BOOSTER CAPACITOR by the supplier DÖNBERG). Today the colloquial term would be "Snubber Capacitor" - so I think.
The currently available substitution are the WIMA FKP versions, unfortunately not available with axial leads.
The Roederstein versions (ERO) like this picture about
http://oldtube.com/ERO-MKP1842-468.jpg
is not a perfect replacement.
The logo "db" is an abbreviation.
The associated brand name was the German surname (family name) "DörrBeck" - a small German manufacturer of high quality capacitors, mainly for the use in horizontal fly back stages (arround the "BU" transistors in televisions).
A picture you will find in post #1.
This brand wasn't purchased or overtaken by a new company.
This means, that the background knowledge of this company isn't available for others.
There are no broshures, folders, datasheets, publications or other printed material on the web.
This means, only the released reports (news) and advertisements in vintage electronic magazines from those days is available.
Perhaps one of the members can look for this (1970s and 1980s).
about the thread
http://www.diyaudio.com/forums/soli...rrently-available-electr-audio-magazines.html
I have listed some magazines.
BTW - the colloquial term for this device here in Germany by the most suppliers was "Booster Kondensator" (PLASTIC FOIL BOOSTER CAPACITOR by the supplier DÖNBERG). Today the colloquial term would be "Snubber Capacitor" - so I think.
The currently available substitution are the WIMA FKP versions, unfortunately not available with axial leads.
The Roederstein versions (ERO) like this picture about
http://oldtube.com/ERO-MKP1842-468.jpg
is not a perfect replacement.
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The high quality appearance suggests that it is German made, polypropylene rather than polystyrene.
yes, but only concerning the outline, but not concerning the sound character in listening tests.
who know about genuine datasheets and advertisements of this vintage HV booster capacitor (check out post #8) ?
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any news (folders, datasheets, publications) concerning this no longer exist capacitor brand "db" (dörrbeck) ?
