Roederstein cap ID please - diyAudio
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Old 24th January 2006, 01:00 PM   #1
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Default Roederstein cap ID please

Description:
---------------
1" high x 5/8" round Radial "epoxy?" filled.
Burgandy plastic case.

(markings on top):

220125
ROE (logo)
v9 EKU
----------------

(my guess is 220125= 22pf 125v....or 2200pf 25v?.....but the EKU stumps me )

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Old 24th January 2006, 03:46 PM   #2
MRupp is offline MRupp  Germany
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Check the caps in this amplifier picture - do they look similar? http://www.brinkmann-audio.de/bild.php?calvin.jpg

These are NOS Roederstein electrolytics, not shure though where you can get the datasheet. Could be 220 uF, but no idea about the voltage, maybe you know the maximum voltage to be expected in the circuit ?
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Old 24th January 2006, 05:53 PM   #3
testlab is offline testlab  United States
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I could not find the exact series but try here:

http://www.vishay.com/capacitors/aluminum/radial/
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Old 24th January 2006, 07:36 PM   #4
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E for Electrolytic
Some Roederstein electrolytic series:
EL EB EG EBU EGU EKF EYF EKS EK EKR EKU
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File Type: jpg roe.jpg (13.5 KB, 275 views)
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Old 25th January 2006, 08:23 PM   #5
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I had a suspicion these were bi-polar, hence the lack of polarity marks. I am about to try to post a pic...let's see if it works... :

no, image takes up whole page...I'll figure it out later...here is the link:

http://i5.photobucket.com/albums/y17...t/DSCN1699.jpg

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Old 25th January 2006, 08:46 PM   #6
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There you go : bipolar, 220uF, 25 volts.
What more do you need ?
These are actually quite good, so many brands employed them that i started using them in the mid 80s.
I believe they were only produced in the 16, 25 and 40 volts range.
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