Help identifying dead electro. cap polarity?
Sparky
<http://i37.tinypic.com/10psxg3.jpg>
It has no polarity markings. One terminal is common with the metal case. Is
this always an indication of the (-) terminal?
The base has molded terminal locations numbered 1-4, two of which are empty:
<http://i36.tinypic.com/e6x542.jpg>
Markings on the side are:
B41111-B7108-T
1000uF 40V-
GERMANY
GPF DIN 41332 06.78
I find a few references to a Siemens part that is similar:
<http://www.screenghost.com/shop/show.asp?ID=74#>
but no datasheet can I find. Can someone more resourceful than I find one?
I cut open one of these caps. It is paper & foil (or so it seems) spiral wrap
construction. Can polarity be determined by internal construction? Is the
center terminal always one pole (ie, always +)?
Thanks.
Phil Allison
"Sparky"
> This cap was removed from a 70's-80's German industrial machine:
>
> <http://i37.tinypic.com/10psxg3.jpg>
>
> It has no polarity markings.
** Bullshit.
> One terminal is common with the metal case. Is
> this always an indication of the (-) terminal?
** Yep.
> The base has molded terminal locations numbered 1-4, two of which are
> empty:
>
> <http://i36.tinypic.com/e6x542.jpg>
** Are you totally blind ????
The usual cause applies ?????
FYI:
The markings are clearly 1, 2 and 3 with the fourth a NEGATIVE sign
!!!!!!!!!!!!!
Is not the negative sign *right next* to the pin linked to the case ?????
.... Phil
notme
To me they look like "1" (not a "-"), "2", "3", and a really weird "4".
> Is not the negative sign *right next* to the pin linked to the case
But with your help along with the one pin (yes, it's the (-) one) in common
with the case pretty much confirms polarity.
Thanks!
Nighty-night! Lights out!
Sylvia Else
> "Sparky"
>
>> This cap was removed from a 70's-80's German industrial machine:
>>
>> <http://i37.tinypic.com/10psxg3.jpg>
>>
>> It has no polarity markings.
>
> ** Bullshit.
>
>> One terminal is common with the metal case. Is
>> this always an indication of the (-) terminal?
>
> ** Yep.
>
>> The base has molded terminal locations numbered 1-4, two of which are
>> empty:
>>
>> <http://i36.tinypic.com/e6x542.jpg>
>
>
> ** Are you totally blind ????
>
> The usual cause applies ?????
>
> FYI:
>
> The markings are clearly 1, 2 and 3 with the fourth a NEGATIVE sign
> !!!!!!!!!!!!!
Are they? Their order is a bit strange if so.
On the other hand, take the - to be a 1, and the other symbol to be a 4
with a bit missing, and you have 1, 2, 3 and 4 in a normal order. So the
situation is far from clear enough to form a basis for installing a
replacement.
Sylvia.
Phil Allison
"notme"
>
>> The markings are clearly 1, 2 and 3 with the fourth a NEGATIVE sign
>
> To me they look like "1" (not a "-"), "2", "3", and a really weird "4".
** Nonsense.
The stroke on the " 1" has been made longer to avoid confusion with the
" - " sign.
.... Phil
Phil Allison
"Stupider than Anyone Else on Earth "
>>> <http://i36.tinypic.com/e6x542.jpg>
>>
>>
>> ** Are you totally blind ????
>>
>> The usual cause applies ?????
>>
>> FYI:
>>
>> The markings are clearly 1, 2 and 3 with the fourth a NEGATIVE sign
>> !!!!!!!!!!!!!
>
> Are they? Their order is a bit strange if so.
** Same order as an 3 pin XLR.
> On the other hand, take the - to be a 1, and the other symbol to be a 4
> with a bit missing, and you have 1, 2, 3 and 4 in a normal order.
** Shame about that " bit missing" - eh ??
You stupid, grossly autistic bitch.
Fuck off.
.... Phil
TTman
>
> The base has molded terminal locations numbered 1-4, two of which are
> empty:
>
> <http://i36.tinypic.com/e6x542.jpg>
>
> Markings on the side are:
>
> B41111-B7108-T
> 1000uF 40V-
> GERMANY
> GPF DIN 41332 06.78
>
> I find a few references to a Siemens part that is similar:
>
> <http://www.screenghost.com/shop/show.asp?ID=74#>
>
> but no datasheet can I find. Can someone more resourceful than I find one?
>
> I cut open one of these caps. It is paper & foil (or so it seems) spiral
> wrap
> construction. Can polarity be determined by internal construction? Is the
> center terminal always one pole (ie, always +)?
>
> Thanks.
>
through it that makes it look like a lower case t.
So I suggest the - really is MINUS.
baron
I agree ! That is how I read it.
--
Best Regards:
Baron.
ChrisQ
If you *really* can't identify polarity from the part, trace the circuit
back to the rectifier, another cap or dc input to the board. Or, solder
a non polarised cap of a few uF to the board, power up and check with a
meter. The fact that it's lower uF than the electrolytic is unlikely to
damage anything...
Regards,
Chris
chrisj...@proemail.co.uk
> This cap was removed from a 70's-80's German industrial machine:
>
> <http://i37.tinypic.com/10psxg3.jpg>
>
> It has no polarity markings. One terminal is common with the metal case. Is
> this always an indication of the (-) terminal?
Almost always, but ISTR reading warnings that occasionally you come
across one made for use with a negative supply rail, when the can will
be positive, so you're right to make sure.
However, in this instance I agree with other posters that the markings
indicate that the can is negative.
Chris
PeterD
>This cap was removed from a 70's-80's German industrial machine:
>
><http://i37.tinypic.com/10psxg3.jpg>
>
>It has no polarity markings. One terminal is common with the metal case. Is
>this always an indication of the (-) terminal?
>
>The base has molded terminal locations numbered 1-4, two of which are empty:
>
><http://i36.tinypic.com/e6x542.jpg>
Me, I'd guess the terminal marked with the '-' is negative, but that's
just my warped thinking.
George Herold
Ahh but it's german. They make the 1 with that little hat. And then
when they make a 7 they always add a cross through the middle... so as
not to confuse it with the one.
George H.
Tim Wescott
Rich Grise
> Phil Allison wrote:
>>
>> The markings are clearly 1, 2 and 3 with the fourth a NEGATIVE sign
>> !!!!!!!!!!!!!
>
> Are they? Their order is a bit strange if so.
>
> On the other hand, take the - to be a 1, and the other symbol to be a 4
> with a bit missing,
This is how right-pondians write the numeral "1". They also cross their
"7"s. ;-)
Cheers!
Rich
Raveninghorde
wrote:
Wrong. Rigt of the English Channel, not of the pond.
Ron
North Sea in fact
Ron
ChrisQ
Sometimes cross a 7 if the need arises, but it's not so common in the uk
as it is on 'the continent'.
We may have signed up to some of the eu insanity, but we are far from
hearts and minds for the revised 1000 year reich / european federal
superstate / new world order :-(...
Regards,
Chris
Reinhard Zwirner
>
> This cap was removed from a 70's-80's German industrial machine:
>
> <http://i37.tinypic.com/10psxg3.jpg>
>
> It has no polarity markings. One terminal is common with the metal case. Is
> this always an indication of the (-) terminal?
>
> The base has molded terminal locations numbered 1-4, two of which are empty:
>
> <http://i36.tinypic.com/e6x542.jpg>
>
> Markings on the side are:
>
> B41111-B7108-T
> 1000uF 40V-
> GERMANY
> GPF DIN 41332 06.78
>
> I find a few references to a Siemens part that is similar:
>
> <http://www.screenghost.com/shop/show.asp?ID=74#>
>
> but no datasheet can I find. Can someone more resourceful than I find one?
<http://www.bilder-hochladen.net/files/12b4-4t-jpg.html>
HTH
Reinhard (native German ;-) )
Proteus IIV
THIS IS PURE TROLL BAIT
I AM PROTEUS
Proteus IIV
PLEASE DO NOT FEED THE TROLLS
I AM PROTEUS
James Sweet
How is it wired in the circuit? When in doubt, this is what I look at.
You can also substitute it with an AC rated cap and just measure the
voltage across it to find out which way around it should be.
Robert Baer
caps with POSITIVE (outside) cans/cases.
Ian Jackson
<37a5b8a3-0141-4a1b...@k17g2000yqh.googlegroups.com>,
George Herold <gghe...@gmail.com> writes
The Germans (and those in many other Continental European countries)
certainly do that when WRITING the number 7. However, I can't recall
ever seeing it on a PRINTED 7. This is (of course) because they start
writing a 1 (one) with a long slanted up-stroke, followed by a vertical
down-stroke. As such, it's not unlike an 'artistically' written 7. The
addition of a horizontal stroke through the vertical down-stroke of the
7 prevents it from being confused with a 1. With a printed 7, the top
stroke is definitely horizontal, and there is no confusion.
Most non-Europeans write a 1 (one) as a single vertical down-stroke, so
there is no possibility of confusion between a 1 and a 7. However, if
you decide to embellish a 1 with the short slanted up-stroke at the top
and the foot at the bottom, you have to be careful that it cannot be
confused with a 2.
--
Ian