# Questions tagged [electrically-conductive]

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128 views

### Custom game controller - button trace conductive coating

I'm attempting to make a custom controller for an old game console, and I'm looking for a way to replicate the conductive coating on the traces for the button pads: I'm harvesting the silicone pads ...
129 views

### How can I cover my pressure transmitter sensors with a material that will protect it from being dirty and at the same time not interfere with signal

I am an engineer in oil field and am using a wireless system for data acquisition. The logger is connected to an antenna which receives the signal from the pressure transmitter sensors. I am working ...
206 views

### Why the voltage across two points is zero in that circuit?

I'm a software developer and I'm learning electronics for embedded systems. As I understand circuit today when a voltage is applied across a wire then the wire have a potential difference equal to the ...
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57 views

### Running capacitor of a floor scrubbing machine

I have a floor scrubbing machine which uses two capacitors - a running capacitor and a starting capacitor. The starting capacitor got broken and I want to replace it. The rating is 270-324 MFD, 125VAC....
50 views

### What is a charge on a conductive plate with a voltage between itself and a distant ground?

You'll find numerous examples of equations of capacitors and how to calculate the charge upon the parallel plates. But what is the charge on a conductive plate with a voltage between itself and a (...
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1 vote
3k views

### Potentiometer contact surface between carbon track and solder pin lost its conductivity

I have a 10k stereo slide potentiometer with the carbon tracks pretty much intact but one of the short 'traces' that connect the ends of tracks to the solder pins seems to have somehow deteriorated ...
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123 views

### Electrical conductivity of quartz glass at a certain temperature

What is the state of the material, from the electrical conductivity point, of quartz glass at 1100 K temperature, given the value of conductivity at 330 K temperature which is 1.5 × 10-12 S/m and 8.7 ×...
184 views

### (Electrical Misconduct) Two phases connected as three

I'm trying to be brief as best as I can, There are only two phases working (Red & Yellow), so the electrician shared Yellow phase between two terminals (as seen in the image), and of course will ...
2k views

### What is more conductive, copper or doped silicon? [closed]

At room temperature, which is more conductive: copper, N-type silicon, or P-type silicon? What are their respective conductivities?
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432 views

### How does the circuit close when I touch a live wire with grounded feet (touching the floor)?

When I touch the live wire from a power socket with my bare foot on the floor, how does the circuit close (how does the current return to the supply)? First of all, how do tiles in the house floor ...
• 203
41 views

### Noise in transmission system

Does external noise (not electrical noise) affect system voltage? If so how does a source of sound energy distort a voltage waveform? https://youtu.be/4TCnYYpZxEc What exactly is happening in this ...
86 views

### Project of a capacitive finger to test finger Print sensor

How can I choose the best material to use in a project of a "capacitive finger"? The capacitive finger will be used to simulate a human finger , and will be used to test Finger Print Sensor or Touch ...
1 vote
527 views

### Can ECG electrodes be used for EEG detection?

Im having financial limitation for purchasing EEG monitoring modules or electrodes. But so is not the case for ECG. I am doubtful whether I can use ECG electrodes for EEG since brainwaves are in the ...
173 views

### Is it safe to use MG Chemicals Nickel Conductive Pen on a surface exposed to hand/skin touch?

I'm currently working on a project i.e. making a custom controller for my own game. I've to make a glove like controller. I'm currently using wires for making the controller work but I've listened to ...
1 vote
450 views

### How can I calculate Ampere Per Hour if Intensity has been given

Today I had an exam on Technology, and there was a question: If a nano robot has a battery of 2.15Ah(Amper per hour) , how much it will last without recharching , if the robot spends 1.8I(Ampere) ...
287 views

### Is it safe to apply a voltage to a cup of water, and then use the water in that cup as a voltage source for other electronics?

From research it appears that water level detection circuits, such as the one I have included below as a diagram, work on the principle that when the water is high enough to submerge both the +ve and -...
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139 views

### How can I store unused silver conductive glue? Is it possible?

I purchased some silver conductive glue. How can I store the unused portion of glue so the needle and the metal portion won't get clogged up after its first use? I purchased it from Amazon a while ...
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77 views

### Transformer Leakage Inductance and power factor

How does transformer leakage impedance affect power factor? Or how does the X/R ratio of the transformer change the power factor ?
155 views

### Transformer Ratio

what if we energize 50 Hz h.v side of the transformer with 40Hz, is the transformation ratio don't matter? Suppose 400/200, single phase transformer which is designed to operate at 50Hz. If you ...
49 views

### AC power supply issue

If I'm getting a voltage of 240 V on an open circuit, the voltage drops to about 200 V when a heavy load is connected to it. (Plasma Cutter in my case. Hence it wont work) Further on, is there a way ...
1 vote
488 views

### How to calculate the time that a piece of wire can last before it melts when constant current is applied

How to calculate the time that a piece of wire can last before it melts when constant current is applied? Assume it has a fixed cross-sectional area, I know longer the wire quicker it will melt, but ...
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521 views

### Conductive paint for ESD protection

Will conductive paint applied to the inside of an ABS case prevent the case from getting electrically charged? It was suggested to me to use a conductive plastic enclosure to prevent triboelectric ...
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1 vote
87 views

### Proper thickness of different copper items normally used in Electric switch and socket?

When i open the plastic casing of electric switch and socket normally used in household like (250 V AC 16 A Switch , 250 V AC 13 A Socket) then i found different shaped copper bar. copper rod, copper ...
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50k views

### What is the difference between 50/51N relay and 50/51G relay [closed]

On electrical engineering field of power distribution. When it comes to ground fault detection on solidly grounded or low resistance grounded transformers. When do we use 50/51N relay and 50/51G, do ...
3k views

### Why do we use derating factors when sizing conductors?

What is the main reason behind using derating factors in case of determining the cross sectional area of a conductor and what happens if we don't take these factors into account ?
52k views

### How can I make connection on pcb (circuit board) holes without solder (for prototyping)?

I have a Pro Micro board (very small -- see pic below) and it has connector holes in the printed circuit board. Best Non-Solder Connection (Easy and Removable) I'm wondering the best way to make non-...
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1 vote
170 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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63 views

### What damage can 1500V cause to a circuit? [closed]

I'm working on a device that has a supply of 220 V. The output has an LED at the end of a fibre-optic cable coming from the device in question. If, for some reason, a tremendous amount of voltage ...
2k views

### What are the uses of lugs/ferrules?

I've seen various projects using copper lugs and compressing them with bench vices. What is the purpose? Can't you just use wires without the lugs? Image Source
539 views

### Are corona discharges any different from normal electricity?

As per Wikipedia corona discharge is a electrical discharge brought on by ionization of fluid surrounding conductor. So can corona discharge be used as normal electricity like travel through wires and ...
1 vote
379 views

### Electrical current characteristics through conductor

This is a strange theoretical question, and I won't even begin to try to explain what train of thought has led me to ask the EEs... When electricity travels through a conductor, let's use the obvious ...
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981 views

### Can conductors store charge? [closed]

Why are conductors not used to store charge? How does clouds hold such large volume of charges?
609 views

### Is it possible for lightning strike to travel up ground / earth pin on a mains outlet?

I live in a country that follows the UK mains specification, where there are 3 pins on a wall outlet with the topmost pin being earth/ground. Now, is it possible that during a lightning strike, extra ...
85 views

### What is the physical explanation of electric breakdown?

I would like to know what is the physics behind the electric breakdown in gases so they become electrically conductive. So far, all the information that I have found describes the phenomenon in a ...
1 vote
10k views

### How to bond/connect wires to neodymium magnets?

After reading this, I learned it is not advisable to solder a wire to neodymium magnets. After more reading I found this post describing the use of conductive epoxy to bond electrical wires to ...
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1 vote
604 views

### Electric fence charging of peripheral devices

My game electric fence is split into various sections in order to create redundancy. Is there any design that I can charge a battery along the fence line from the joules generated from the line but ...
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3k views

### Detecting mobile phone in airplane mode

I am working on a project to detect mobile phones in a room to avoid cheating. But the airplane mode ha posed a problem. A google search told that all radiations are switched off during airplane mode. ...
979 views

### step down transformer(240V-9V) [duplicate]

I Have step down transformer that transforms 240V to 9V. However, I cannot find out, which terminals are for input and which are for output. The turn ratio size is very similar, because it is covered....
1k views

### Looking for electrically-conductive paste

I apologize in advance if this question is a shopping question. I am having problems with noisy connection problems on a metal shield that covers a very sensitive VCO in a professional wireless audio ...
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