Electrical Engineering

Questions tagged [plastic]

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Component that measures plastic bottle wall thickness?

I am on my senior year in college taking electronics engineering and currently working on a project that is a trash bin only taking in plastic bottles and giving incentives to the user depending on ...
0
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2answers
58 views

Mechanical pressure contact

What I'm looking for is to be able to solder a mechanical pressure plate/arm to a PCB, where a plastic tab can be inserted. This contact (when connected) will complete the 3.3V/5V supply and turn on ...
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2answers
72 views

Identifying this component adapter/socket

I'm sorting an old collection of electronic components, some of which I don't know what they are used for, like this one: This component is about 7 mm wide. Does anyone recognize this? Thanks in ...
17
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3answers
5k views

What kind of rubber “melts” plastic?

I know this should probably be posted in a chemistry exchange, but I figured the parts are pretty standard electronics equipment that the question might be more relevant here. So a couple of ...
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2answers
1k views

Grounding inside a plastic enclosure

I hope this is an easy question for you. I am using a plastic box as a watertight enclosure for a single board computer and some accessories. I will be using an AC power source coming in through a 3 ...
0
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1answer
207 views

“etching” transparent conductor on transparent plastic film or glass? [closed]

I've put the word etching in quotations as the method to get conductive tracks on a glass or plastic film might not involve a subtractive approach as with traditional PCBs of applying a conductive ...
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1answer
324 views

X-acto knife with soldering iron (Durable?) [closed]

I know many people who like to use an x-acto knife on their soldering iron. They use it to cut through plastic enclosures for their products. But the question is, how long will the x-acto knife last ...
13
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6answers
2k views

How to stop plastic granules sticking to the iron wall of their silo?

In our factory, we have some large (8 meters tall and 3 meters in diameters) iron silos for storing the plastic compounding material. Every time the silos are getting unloaded from the granules, the ...
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3answers
10k views

Is it possible to make a plastic touch screen as sensitive and accurate as a glass one?

I learned in this answer that touch screens with a glass front are generally more sensitive and accurate than those with plastic fronts. This corresponds with my personal experience. However, is ...
44
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6answers
23k views

Is there a technical reason why most touch screens use glass rather than plastic?

Most modern touch screens in portable devices are made of glass. This glass often breaks if accidentally dropped. Also, it is very reflective, making it difficult to use in strong light. I know that ...
4
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1answer
2k views

What clear plastic stripping is used to wrap a toroidal power transformer?

I'm partially rewinding a toroidal transformer just for the pure thrill of controlling the output voltage. I'm sure I'll get over it, but for the moment that prospect is pretty exciting for some ...
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4answers
567 views

What are the square holes for in most electronic project boxes?

I'm new to the electronic scene and lately I been purchasing a lot of project boxes for the stuff I make, I've noticed in about 75% of the boxes I purchase they come with small square shaped holes on ...
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3answers
1k views

Conductivity of plastic, wood and leakage current of laptops

Back around 2010, there were incidents where the surface of laptops have conducted 20-100V and have electrically shocked users. There is no doubt most of the newer laptops still conduct a continuous ...
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3answers
180 views

How to detect non magnetic material?

I want to design a paintball counter. I have a metallic or plastic tube through which a paint ball passes. How can I detect that the ball passed? What kind of sensors do I need? I cannot see the ...
3
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1answer
158 views

Are stand-offs unnecessary when the case is made of plastic?

If a case is plastic, would there be any real benefit to using stand-offs to ensure the circuit board is not in contact with the side of the plastic case? Even when the plastic is non-conductive? (...
1
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1answer
168 views

Thermoplastic-based touch panels: why not?

(I'm new to EE.SE, so I don't know if this is on-topic here. Please forgive me.) From what I understand, capacitive touch technology relies on coating one side of a resistive material with a ...
3
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3answers
56k views

Fixing/Replacing Conductor Ribbon Cable

I tried to fix a keyboard that was having some intermittent issues by cleaning the conductors on the ribbon cable. I used an emery-board to rub off the rust and patina on the pins at the end of the ...
2
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2answers
190 views

Distance measurement to liquid plastic

What's the best way to find out how much plastic I got in a container? Characteristics: It's slimey It's liquid It's sticky Its electrical resistance is very very high It's very warm(250 degrees ...