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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 8th Nov 2018, 11:07 pm   #1
Jolly 7
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Default Unidentified vintage components

These components were in a box of vintage resistors. I don't know what they are and where they were used. Can anyone identify these please.
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Old 8th Nov 2018, 11:13 pm   #2
60 oldjohn
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Default Re: Unidentified vintage components

Insulated stand offs and feed through ? used before tag strips the bush TR82 uses plastic items very similar.


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Old 8th Nov 2018, 11:17 pm   #3
emeritus
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Default Re: Unidentified vintage components

I have a couple of the bottom item, which is a feedthrough for bringing out a connection through a metal barrier or the wall of a metal box. It would be soldered in place. I don't recognise the other two.
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Old 8th Nov 2018, 11:24 pm   #4
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Default Re: Unidentified vintage components

The top one is a simple stand-off tag connector - a single version of a tagstrip if you like. The spacer will be ceramic. The middle one looks very strange!
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Old 8th Nov 2018, 11:24 pm   #5
Jolly 7
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Default Re: Unidentified vintage components

Thanks gentlemen. That does make sense. First I thought they were old diodes but they are showing continuity on my meter apart from the ceramic glass 'waist' area.
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Old 8th Nov 2018, 11:55 pm   #6
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Default Re: Unidentified vintage components

I also have some of these.

The lower item is probably made by KLG (of spark plug fame) and widely used in oil-filled transformers (Parmeko etc) where they are soldered into the sealed can to form the terminals.

The middle one is of similar application but made of glass.
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Old 9th Nov 2018, 12:13 am   #7
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Default Re: Unidentified vintage components

Feed through capacitors?
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Old 9th Nov 2018, 12:48 am   #8
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Default Re: Unidentified vintage components

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Originally Posted by Andrew B View Post
Feed through capacitors?
These are designed for minimum capacitance. I have just measured a few of mine, and they are all around 4pF.
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Old 9th Nov 2018, 4:29 am   #9
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Default Re: Unidentified vintage components

Insulated feed thru's.
They also made feed thru capacitors that could look very close.
Come to think of it, an insulated feed thru would have a certain amount of capacitance.
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Old 9th Nov 2018, 9:32 am   #10
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Default Re: Unidentified vintage components

Quote:
Originally Posted by emeritus View Post
I have a couple of the bottom item, which is a feedthrough for bringing out a connection through a metal barrier or the wall of a metal box. It would be soldered in place. I don't recognise the other two.
Agreed, except to add that it will be a feed-through capacitor, almost certainly of 1000pF (0.001uF).
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Old 10th Nov 2018, 6:26 pm   #11
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Default Re: Unidentified vintage components

I seem to recall that the feed-through capacitors have a silver, or silvery, covering over the outside outer surface of the ceramic tube.
If so, as ukcol says, almost certainly 1000 P.F.. Tony
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