Questions tagged [conductive]

Applies to a device or a material and describes either electrical or thermal conductivity. As opposed to insulative. This is a qualitative term in which the boundary between conductive/insulative will vary according to application/use.

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2answers
51 views

Touch switch with conductive ink as thin as possible

First for all. Am not an electrical enginner, am just an amateur artisan, pretending make intetesting gadgets. So the situation is this. I need to make a circuit in a sheet of paper for just turn on ...
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80 views

How large can capacitive sensors be if made of tin foil? [closed]

Based on a similar version of this: https://www.instructables.com/id/DIY-3D-Controller/ What are the limits to the size I can make this foil area? And the larger I make it, what does the area need? ...
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27 views

Finding output voltage of a circuit containing diodes

I am given a circuit below and I was hoping to clear up some misunderstanding I may have about conducting and non-conducting diodes. I am not sure which part of my knowledge is wrong, although I know ...
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54 views

Suggestions on conductive materials for textile capacitive pressure sensors

I am doing preliminary research for my thesis. The thesis involves textile capacitive pressure sensors. I am trying to find out more about how the type of conductive material used affects the ...
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1answer
168 views

Is there a thin metal film that I can solder wires to?

For instance, I bought some Dremel bits and inside the packaging were these small extremely thin pieces of metal film. Not sure what they were used for or what metal they were made out of. It ...
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3answers
110 views

Heat Conduction from ceramic resistor to iron rod

I'm trying to conduct a thermal conductivity test. I've set up an experiment where I take a rod of a given material (steel, for example), measure its cross section, length, extreme temperatures and ...
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95 views

Transparent Conductive Paint

Does anyone know of a transparent conductive paint? I am creating some home made electroluminescent panels and I need something what would work with water based polyurethane. Ive had some luck with ...
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Aluminium foil not blocking IR signal

I am using an IR sensor (vishay tsop32 series) but I want to ensure that it only sender directly ahead so I made blinders out of pla and covered them in aluminium foil. However it seems that despite ...
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3answers
153 views

Cockroach or insects triggering conductive ink sensor

I want to modify a cockroach to get it to trigger a conductive ink sensor or Arduino with foil capacitive touch setup. At the moment there is no reaction as far as I can see (in the serial monitor) ...
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1k views

Red resin in-between closely spaced PCB pads

Closely positioned components on this one sided PCB have red resin separating solder connections and underneath surface mount components. What is it? How is it applied and why do only some ...
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1answer
82 views

Is there a conductive spray (not paint, ink and tape, only spray)? [closed]

I heard that there is a conductive spray. So I'm looking for a conductive spray (not paint,ink and tape). But I could not find sites for selling conductive sprays. I bought a silver zinc coat spray....
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535 views

Design a PCB using Kapton film

I am a novice in electronics and wanted to design PCB , as a final year project i am planning to do something related to room heaters so i have decided to use Kapto/polymide material for that. I am ...
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109 views

Temperature tolerant conductive ink

At my workplace we have expensive PCBs that are used for testing. These PCBs have conductive pads which wear out by time since they come in contact with pogo pins. These boards operate at temperatures ...
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123 views

How does Touch Board work?

Some days ago I saw this device called Touch Board. It looks a bit like an Arduino (in fact it's based on Arduino). You can connect conductive materials to it, like aluminium foil. The board is able ...
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1answer
258 views

Question about Skin depth

It says that the energy of the EM wave decays rapidly if it travels through a good conductive material. Therefore, much of the wave is travelling on the surface of the copper wire. (since it decays ...
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793 views

Making conductive traces for capacitive touchscreens

This is a follow-up to this question I asked years ago. A short summary: I'm using a head pointer (see my linked question for a photo) with a tip made of plastic, thus non-conductive. The shaft is ...
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1answer
290 views

How to measure resistance of resistance of gel electrolyte using multimeter

How can I measure the resistance of a gel electrolyte using a multimeter? I know the formula to measure the conductivity of a gel electrolyte is k = (1/R) * (d/a) where k is the conductivity (S/cm),...
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887 views

Chipquick SMD291 No-clean Paste Flux - Conductive?

I'm using this brand and type paste flux, and it works very well... except for one small problem. After assembling 5 prototypes, most had bizarre issues, which were resolved when the flux was removed ...
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1answer
235 views

Conductive magnet to read resistor value?

I want to know if I can hook-up a resistor to one part of a Magnet Snap (carried by SparkFun), then another magnet snap to analog-pin on Arduino and still be able to read resistance value? Is this ...
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2answers
93 views

Is it possible to calculate the position of touch on a conductive thread?

I have a conductive thread of about 2 feet (0.65 m). I would like to be able to sense the position of touch. I was hoping that the resistance of the thread would change at constant rate along the ...
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1answer
95 views

Conductive welding primer on fabric

I saw the discussions about conductive fabric with the links to lessemf.com and others. I'd like to get anyone's thoughts about painting a schematic on cloth using welding conductive primer such as ...
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28k views

Anti-static vs. conductive vs. dissipative foam?

UPDATE: I have included some basic answers inline that I received after talking in depth with an application engineer at a foam company. I think it would still really help for someone to help flush ...
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1answer
1k views

Looking for a transparent conductive spray/paint/ink

I know there are conductive sprays available, but these are strongly coloured due to the metals inside them. I am trying to make a (dry) wooden surface capacitive, but would like to have the feel and ...
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4answers
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Can I use staples to hold down electric wire?

I'm building a very small game for my brother. I am moving it from the original, ready-printed motherboard to a sheet of metal. The metal doesn't have holes punched in it, and I need a different way ...
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184 views

What is the easiest most cost effective way to print conductive ink?

I've designed some interesting prototypes with conductive paint (bare paint). I'd like to see if I can make them more space efficient via some sort of printed design. However, I would like to keep ...
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2answers
15k views

Can I use foil as a wire for my project in tight spaces?

I am building a project that I can put a AA battery into a little compartment. The battery fits fine without anything else in it, but when I put a wire in, it gets tight. A solution that might work: ...
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5answers
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How is saltwater able to conduct electric charge between two wires?

Say I put some wires in a container filled with saltwater, but the wires do not touch, and I connect these wires to a battery: simulate this circuit – Schematic created using CircuitLab I know ...
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6k views

How do I verify if a conductive mat is getting “Earthed”

Explaining to me about electricity is like explaining to your Grand-Ma about it. So please be kind and gentle :) I bought an Earthing Mat from "http://www.amazon.com/dp/B003RLOBOK". It includes a ...
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3answers
16k views

is there some sort of paste, grease, spray or similar thing that helps make more contact surface for high-current battery?

I have terminals attached to a battery, which will conduct high-current (40A to 200A), and these are copper plates. As the plates, and battery terminals are not perfectly even (even if they appear to),...
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881 views

Conductivity of water, and risk of shock? (fact checking)

Through simple researching I have discovered the unit of siemens (being a reciprocal of ohms). Now I wish to apply this to a (silly) scenario where the conductivity of tap water is 800µS/cm (from ...
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1answer
94 views

What is the most available hitemp superconductor for samples and study?

I could only find one named Amperium on the web, but not on the eBay or any little shops. It is very interesting material with conductivity 40 times better than copper. Is it possible to buy anywhere ...
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2answers
497 views

Can I use conductive silicone for anything I could use solder for?

I got my hands on a big tube of conductive silicone. I've never heard of it before, but my first thought was, "Is this just basically wire in a tube?" Has anyone ever used this before? Can you just ...
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1answer
226 views

Is there a conductive tape product that conducts from top to bottom?

I have an application where I need to place something conductive, like aluminum foil, to a contact where an object will be sliding onto. So it needs to be adhesive on one side, yet conduct from the ...
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5answers
294 views

Conductive Fabric [closed]

Does anyone know of a maker of Conductive Fabric?
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1k views

conductive paint + water =?

I'm trying to create an outdoor installation with simple embedded electronics. I was hoping to use conductive paint to connect leds. The leds would be covered (waterproof) but the conductive paint ...
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1answer
367 views

Conductive Thread - non toxic?

Is the conductive thread non toxic? Safe to wear up against your skin for extended periods of time?
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7answers
564 views

Is there a way to print / draw a circuit on to clothing?

I'm looking for an alternative to conductive thread (since I lack some sewing skills). I have seen silver conductive pens but I'm wondering if they could be used for clothing?
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4answers
3k views

Is there a way to make your own conductive thread for wearable electronics?

I am a poor student, was wondering if anyone has any home-brew recipes for making conductive thread for use in wearable electronics?