A length of conductive material used as a conductor of electricity.

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18 views

Threaded wire connections

I'm working on a senior design project that is using three 20-30 gauge wires that are going into a detachable box. The idea is that the box has three wires coming out of it, and the three wires that ...
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0answers
23 views

Unshielded Twisted Wire Pair Simulation

I created a model of a UTP wire based upon discrete RLCG transmission line model. The model is almost 98% accurate when compared to static measurements i.e. Char. Impedance, Inductance, capacitance. ...
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2answers
49 views

How do I overlap wires in OrCAD capture without having the two wires have a node?

I'm doing a schematic for this in OrCAD capture CIS. In laying out my schematic I need to draw one wire going through another wire, but not necessarily intersecting with it via a node. When I drag a ...
9
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3answers
2k views

Electricity not conducted by copper wire

Im am quite stunned as to what might be wrong. electronics beginner I bought today some copper wire, 20SWG /0.9MM from maplin (UK), for a project I am working on. There is no power going through ...
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2answers
42 views

Why there is no high voltage repeater / voltage translator ic (like max232) for I2C

why I2C don't work don't work with long wire, for UART we have 10 volt translators like max232, for I2C why there is no high voltage repeater ic?
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17 views

Fix telephone wires… can't get any signal. wires correct? [migrated]

By accident I pulled the little outlet out of the wall and the wires came out. I remember the electric guy once did it, and put only these 2 wires in, but somehow i'm not getting any phone signal... ...
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1answer
34 views

Fuse and AWG choice for immersion heater circuit

I am planning to operate a 1500 W resistance immersion heater with an SSR and I'm trying to determine which fuse and AWG wire to use. The 1500 W heater on 115 VAC should operate at a current of around ...
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1answer
67 views

Combining 4 22gauge wires

I wanted to ask you a quick wiring question - I need to run a wire to my new thermostat from the furness - I have a spare telephone cable in the wall that has 4 22 gauge wires. I'll be running about ...
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2answers
59 views

Could metal powders replace metal wires?

My headphones broke recently due to what I suspect was work hardening, and I was wondering, could a sealed tube of rubber filled with a powder replace wiring? Products would be more durable as the ...
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1answer
100 views

Can electrical wires be ruined by overheating?

I have a friend that works with automotive mechanical sorts of things, and he told me that he had a pair of jumper cables that was ruined by too much current; it wasn't that the insulation melted: he ...
1
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1answer
82 views

What is this type of wire-connector called? [duplicate]

I am having the hardest time finding something like this on Mouser. I have find things similar, without the screw for example, but never exactly this. Is there a generic name for this type of ...
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0answers
31 views

Can I splice and merge an NES gamepad and the NES zapper gun into 1 wire?

I'm trying to wire an NES (Nintendo Entertainment System) gamepad and NES zapper gun into 1 wire to plug into 1 port. I have an NES embedded into a full arcade cabinet and I don't want to have to keep ...
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1answer
73 views

How do you determine the length of dead soft #10 AWG copper magnet wire which will drop 2 volts when there's 15 amperes through it? [closed]

Ignoring skin effect and the temperature rise in the conductor caused by \$ I^2R\$ losses, how do you determine the length of dead soft #10 AWG copper magnet wire which will drop 2 volts when there's ...
0
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1answer
52 views

Maximum surge current through short run of 24 gauge wire

I'm making a sequenced rocket launcher. I want to apply 5 amps for 3 seconds through a 12 inch run of 24 gauge wire. Since the launcher has four slots, I figured I could use cat5 ethernet cable. ...
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2answers
69 views

Minimum wire gauge for 5 Volt, 5 Amp system

Electrical n00b here. I am trying to create a circuit with 100 ultra bright white/yellow LEDs in parallel (controlled via a rPi) I figured out that I need an external wall wart, rated at 5V, 5A. ...
3
votes
3answers
387 views

What do i need to get this motor running off a car-battery?

I'm going to build a motorized barn-door mount for astrophotography, but have ABSOLUTELY no experience with motors, circuits or anything else related to the motor. This is the motor I bought: ...
0
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2answers
68 views

AWG gauge for 10W cob leds and common ground

Two questions: How can I calculate the appropriate AWG for a 10W cob led (~12V DC at 900mA)? Suppose the appropriate AWG is 22, and I want to use a common ground for them (for the purpose of this ...
4
votes
5answers
465 views

Most ideal wire termination for round screw terminals

My '60 Volkswagen Beetle uses a number of electrical components that are equipped with round screw terminals, like you can see in the picture below: What is the most ideal wire termination for ...
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2answers
89 views

Where can I buy or how can I make high quality jumper cables?

The jumper cables in my possession are all so stiff and seem cheaply made. The connectors fall apart and its frustrating. The jumper cable is such a simple but critical component - how/where can I ...
15
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11answers
2k views

How to solder with one hand?

I am a beginner at electronics. I don't have many tools and stuff, so I am forced to solder by hand. I don't have a pcb to solder on, so I usually just solder the wires together, but it's really ...
6
votes
5answers
765 views

Does “Connected” mean solder together?

Looking here, I am shown that the connecting symbol, means the wires are, literally "connected" as shown below. I am currently working on trying to decipher an FM Radio schematic, but am having ...
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2answers
216 views

Current capacity of very thin (0.1mm ~ 0.5mm) copper wires?

I am looking at this very thin copper wire. It does not have much description other than the physical dimensions. What's the maximum current capacity of these wires? I guess they are not for power ...
2
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3answers
204 views

20AWG wire inductor and 8A, possible?

I have a inductor made up of ~5cm of 20AWG wire. Switching frequency of the inductor is 500kHz. And the duty cycle is somewhere between 10-30%. Maximum current through the inductor is 8A at around ...
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3answers
109 views

Why are headphone wires so thin?

Speaker wire is thick so why are the wires that go from a stereo plug to earbuds so thin? They seem unnecessarily thin. Is this so they break easier and then I need to buy another pair of headphones? ...
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1answer
103 views

What is the purpose of the thick blue line in this schematic?

On this schematic for a Z80 computer, there appears to be a thick blue wire connecting some components together. What is it? Googling yields no results: here is the schematic
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2answers
117 views

How can I work out if a cable can take a momentary current spike?

In this video here, almost 1000A is being run through a 10mm steel bar, and after a minute or so, it melts. https://www.youtube.com/watch?v=YzZ3aJqmT-M So in terms of charge, 60,000C applied for 1 ...
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2answers
251 views

Magnet Wire Insulation

A close examination on magnet wire tables of various manufacturers like `http://www.epicos.com/EPCompanyProfileWeb/Content/CABLES/Magnet%20Wire%20Data%20Sheet.pdf (page 9),shows that the ratio of the ...
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2answers
484 views

Pt100 wires to make Wheatstone Bridge

I'm currently trying to build a circuit on a breadboard that, through a temperature sensor, gives off a voltage which I need to amplify. I'm using a Pt100 sensor with 3 wires (red, blue and yellow) ...
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1answer
63 views

What is the name of the following cable?

Instead of wrapping cables I will like to make the connection by using the following type of cable: what is the name of the female and male cable with this circular end? I will like to buy this ...
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0answers
54 views

Cable re-threading, ending, connection help

Been a while, trying to find out what are the pin connectors in a standard car PJB plug. I am trying to clean up the wires so they can plug back into the plug, I'm not sure what the plug for the end ...
8
votes
2answers
2k views

What is the use of magnets around electrical cables?

I haven't seen any for a while now, but a couples of year ago I saw some several times: cylindrical magnets around electrical wires. I'm not talking about specialized equipments but items of everyday ...
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2answers
288 views

How much AWG do I need for 12V 20A [duplicate]

How much AWG do I need for my circuit wires knowing that the current can vary 10 to 20A with 12V supply And what is the cheapest and safest way to join 2 wires together ?
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1answer
109 views

How to maximize inductance of a homemade coil?

So how can one maximize inductance of a homemade coil made out of copper wire? I assume adding a ferromagnetic core to the coil increases inductance? Also how can we calculate this inductance ...
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1answer
268 views

Formula for voltage drop vs PCB trace width, temperature, current, and trace length

I need to find out the voltage drop in the PCB traces with respect to the possible factors like: copper thickness, trace length, trace width, temperature, etc. I found some calculators available at: ...
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1answer
93 views

Connecting FT2232H board (60 MHz via 2.54 mm header) to FPGA board

I am trying to connect FT2232H breakout board (http://www.digikey.com/catalog/en/partgroup/ft2232h-evaluation-board-ft2232h-mini-module/15377) to DE0-Nano FPGA board ...
-1
votes
1answer
61 views

Elongate the power supply p4 connector [closed]

I've got pico-psu, tiny little power supply for computers. Recently I've moved onto a new motherboard, connectors on this mobo are located further than before. So I had to elongate psu-p4 connector ...
0
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3answers
96 views

Electrical resistance converted to wire temperature

I'm trying to get a formula that I can reuse to help me determine wire size and properties. The goal is to heat a 430' wire between 40-100F using 12 volts and 10 amps of direct current. Everyone is ...
0
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1answer
61 views

Can “over rated” cable impact power drain?

I am rebuilding an eGo-T (3.7v +/- 0.5) and wanted to replace the sub-standard wiring that was starting to show signs of heat damage. For some stupid reason I got rid of most of my supplies to save ...
8
votes
3answers
871 views

Flow of electrons in a wire

Electricity is "flow of electrons". My child asked me if this is so, then ultimately the copper wire should disappear/vanish/finish because the matter is moving from one place to the other. I am not ...
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1answer
79 views

Current “jumps” from one wire to the other

I have cable with two 1.5mm wires in it. Why does my test light show voltage in both wires even though only one of them is connected to 220V AC grid. // Also there are old cables with metal jacket ...
0
votes
2answers
533 views

Can someone explain what each pin does on an LM3914 dot/bar graph chip?

I got an LM3914 chip to control a ten segment bar graph, but I am confused on how to wire it. The data sheet is not helping me with what pins do what and how to wire it. I need to know how it works ...
1
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1answer
453 views

Connect broken headphone+mic wires [closed]

Does someone know how to connect this wires without using additional hardware? Thank you in advance for replies! P.S. Right item is a Logitech's and left one is SVEN's
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0answers
56 views

Analyse data discrepancies: Efficiency of wire vs current

Please help me explain why the efficiency of the wire does not follow a distinct path (ie R^2 value is low). Graph 1 Efficiency of wire vs current: http://postimg.org/image/p49bzm4ab/ Is is to do ...
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1answer
62 views

Explain this line of working when solving for the maximum power of a load resistor

Please, can you explain this line of working from the maximum power transfer theorem: For maximum power dissipation in the load, the condition given below must be satisfied $$\left. ...
0
votes
1answer
65 views

Help compare my results to the maximum power transfer theorem and explain using algorithms

So below is an image of the relationship between efficiency of a circuit and the resistance of the load, as you can see the maximum efficiency occurs when the two resistances are equal. here is a ...
0
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0answers
143 views

Can I use Cat5e cable to carry 12V and signal for Raspberry Pi project?

I'm doing a "home automation" project with a RPi at the center. It's to do various things including a) controlling lights using PIRs, and b) automating a motorised blind. The blind is opened / closed ...
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votes
2answers
353 views

How to connect 3 toggle switches to 1 battery supply, using 1 wire

I currently have a battery supply, 3 toggle switches, and a Protoboard. The protoboard has various components connected to it, incluing two motors. I need to connect two switches to the motor pins, ...
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2answers
134 views

How do we get the proper USB charger for tablets with varying cable lengths and gauges?

We install tablets on walls that require a constant supply of charging power. We use different cables with various lengths and gauges. Most of our installs use Cat5E so we usually use 2 conductors of ...
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4answers
147 views

Large Wires on a Perfboard

I am working on a project on Perfboard which involves controlling a motor that draws about 10A, and I am using 18AWG stranded wire to connect the MOSFET on board to the battery and motor which are off ...
2
votes
5answers
879 views

Which wire gauge for a 250 amp source?

I have no real experience with this stuff... I have two 6V 220Ah DC golf cart batteries that I want to put in series to make a 12V 220Ah output that I will connect to a 3000W power inverter, my ...