Help identifying dead electro. cap polarity?

[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. 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]

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".

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"


** Bullshit.


** Yep.



** 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"

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 "

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.

**** off.


..... Phil

 

[baron]

TTman Inscribed thus:

AFAIK Germans always write a ONE with a tag ( opposite 2) and a 7 with
a tag through it that makes it look like a lower case t.
So I suggest the - really is MINUS.

I agree ! That is how I read it.

 

[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.

 

[Rich Grise]

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]

This is how right-pondians write the numeral "1". They also cross their
"7"s. ;-)

Cheers!
Rich

Wrong. Rigt of the English Channel, not of the pond.

 

[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 ;-) )

 

[James Sweet]

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?

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.

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.

 

[Ian Jackson]

In message

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.

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.