Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [identification]

Identify chips, connectors, cables, and other components, from photographs and descriptions of the surrounding circuitry or equipment.

Frequently, components are unlabeled, making it difficult to find data sheets, or to order replacements. Please provide both sharp and properly cut images with a reasonable resolution, and a description of the circuitry or equipment of which the component is a part.

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What is the name of these little plastic things that protect wires from being cut into by the sharp edges of a drilled hole?

What is the name of these little plastic things that protect wires from being cut into by the sharp edges of a drilled hole?
Zhro
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How do I identify SMD components? (or how do I identify any component)

How do I identify the markings on an SMT component and match it up with a part number so I can be a good designer and actually look at a datasheet (and read the whole thing)? Or identify a part to replace an unknown part on a PCB?
Voltage Spike
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What is this object found on transmission lines?

What are the components, circled in red in the figure, on this transmission line ?
Electrical Engineer
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Please help me identify this odd-looking component

When opening up a car alarm system I found this strange-looking component. I thought that it could be something which is light dependent, but the entire board is enclosed in a black plastic box and the alarm should trigger before the thief reaches…
Daniel Tork
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What is this cartridge fuse style component?

This is a Sony EVO-9500A (old 8mm tape player/recorder). What is the cartridge fuse style component? It is 1/4" by 1 1/8" about the same size as a 3AG fuse. It has a scale on the front going from 0 to 10 and looks like a thermometer. The only…
David
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Taking apart old electronics

I sometimes end up having someone's unwanted old electronics, usually faulty ones. Does it make sense to harvest components from such. Anything valuable I should be looking for?
Petteri H
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Help identify the IC manufacturer: is it really possible that these ICs from the 60's just made a comeback (К155ИД1)?

So we've been manufacturing Nixie Clock kits for the last few years, and for the multiplexers we used 74141 ICs, or their Soviet clones (К155ИД1). The latter were easier to find on ebay and were used more commonly. These chips have a date code like…
anrieff
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What is this unusual LCD controller technology?

Preface: Even if you do not have a definite answer, I would greatly like feedback from anyone who has even seen an LCD using this technology. I recently took apart a Canon digital camera from the late 1990s and obtained an unusual LCD display.…
3871968
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Resistor Mounted On Top of IC?

Recently, I've been working to repair a broken 1980 "Arp Solus" synthesizer that I acquired from a friend. I have, however, found myself confronted by an unfamiliar arrangement: some kind of resistor fixed (glued? melted?) firmly to the top of a…
bleep
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Identify this rechargeable battery pack

I want to identify a rechargeable battery pack from inside an old portable hard-drive. It is unlabelled. (I ripped open the blue covering - it isn't labelled on the internal metal cover either.) Battery is ~55m x ~33m x ~5mm - so relatively flat.…
Oddthinking
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What are those small metal bars going across a PCB for?

In quite a lot of PCBs that I have seen, they often have these small metal bars going across from one point to another. Here is an image of what I am talking about. In this example it is a charger: J2 and J3 are what I am talking about For…
George
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Is there some logic in IC name prefixes?

There are hundreds of prefixes in IC names, this page lists a number of them. For some it's easy to see that they refer to the manufacturer's name, like AD for Analog Devices or LT for Linear Technology. Others can be found with several…
stevenvh
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What is the purpose of this device?

I found this device in my father's basement, but I can't figure out what this device is. It has only 1 SCART connector, 1 power cable and only 1 button in front of it. I think it may be some old video decoder, but I'm not sure. These are the images…
brko
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What is this chip, who makes it and what's it used for?

I was cleaning out some junk when I encountered an interesting chip. It looks like a remnant from the Apollo space program with its all-metal body with the marking ADC581B 8533 6686. Next to the 8533, there's a company logo resembling a sine wave,…
user148298
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Trying to identify threaded round 2-way power connector on a radio

I'm trying to find a power connector for a Maxon DM200 Mobitex radio terminal. As far as I'm aware, the part of he manufacturer who made this radio closed down some years ago, and there's no support available. I've uploaded some photos of the…
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