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Anyone know what these are called?


WIMorrison
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2.6 mm banana plugs or 'Marklin' plugs. 

 

E.g. here:

https://www.conrad.com/search?search=2.6%20mm%20jack%20plugs&searchType=regular

 

(I'm sure a UK suppliers also exits)

 

pekka

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Definitely “Banana Plus”

 

No idea why.

 

They have been around a long time as I can remember them from the 60s while at college 

 

Often used in test equipment as the hole in plug you could put a test meter probe.

 

terry 

 

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From the wikipedia (about standard 4 mm banana plug):

 

https://en.wikipedia.org/wiki/Banana_connector#History

 

"-- The pin's diameter is nominally 4 millimetres (3⁄16 in). The pin has one or more lengthwise springs that bulge outwards slightly, giving the appearance of a banana [bunch]. --"

 

pekka

Edited by PSi
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I use a slightly bigger variety it's called the '4mm banana plug'. Ideal for interboard linking of a DCC bus between boards on a portable exhibition layout. Provided one uses different colours for each cable!! They are pretty robust having been used for several years on one layout.

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1 hour ago, PSi said:

From the wikipedia (about standard 4 mm banana plug):

 

https://en.wikipedia.org/wiki/Banana_connector#History

 

"-- The pin's diameter is nominally 4 millimetres (3⁄16 in). The pin has one or more lengthwise springs that bulge outwards slightly, giving the appearance of a banana [bunch]. --"

 

pekka

There's Wikipedia for you: 3/16" is 4.76mm, which is nominally 5mm.

4mm is (very much) closer to 5/32". 

Be careful to check when shopping around!

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