Looking to identify an unknown electronic component...

Aug 27, 2006 3 Replies

Hi Everyone,



I have an unknown electronics part, and I'm looking to identify it:


- 5 pin device, something variable about it b/c there's a slotted screw turn on top



- Markings: - TOP: N3 4 - SIDE: TRO 215 E572



- Image:

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If someone has an idea what it could be, then I could set it up as though it were said device, and check if behaves as expected. I just don't have any clue where to begin as of yet.



Thanks for any help!



Looks like a small coil (=inductor) - the type of thing you'd find in the radio frequency stages of.... a radio

Can't help on the meaning of the markings - it'll be a part number of some sort, and without knowing the manufacturer it's hard to make any suggestions.

As to testing it - these things typically have two coils, possibly with a capacitor across them, making a tuned circuit.

Check with an ohmmeter across the outer two pins of the 3-in-line - probably get continuity - low ohms. Also check the other coil (the two opposite pins).

The screw adjustment in the top will screw a ferrite core down into the coil to allow it to be fine-tuned...

Hope this helps Adrian - Suffolk UK

It looks as if the manufacturers name is stamped around the adjustment hole - do a google search!

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