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

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4
votes
3answers
6k views

Why is there a voltage drop in a twisted pair wires of an UTP cat.5 cable?

I put 12V DC through a pair of twisted wires of a 50 meters (~160 feet) UTP cat.5 cable and noticed that there was a voltage drop at the other end of the cable. It only had 5V. If I'm feeding the same ...
1
vote
3answers
730 views

Choosing the right type of wire?

I am going to have a something thats runs on 120vac pulling 1-2amps is there a chart or something for choosing the right gauge of wire? The wire will run from an inverter in the front of my car(by ...
3
votes
3answers
2k views

Why would a power cable need copper wire shielding?

Today I witnessed burying 10 kilovolt power cable in the ground. I noted the cable mark and Googled it. The description is rather interesting. It's a single conductor cable - it takes three such ...
1
vote
1answer
357 views

At DC frequency, how long can wire be until signal attenuates almost completely?

Just got curious about this last night when I was wiring a couple of LEDs on my brother's long board. For a simple DC circuit (Battery, resistor, LED), how long can I stretch the wire until the power ...
2
votes
2answers
677 views

Ideas to connect wires at 90deg without solder?

I'm in the process of building a 16x16x16 LED cube and am looking for a way to connect two wires at a 90 degree angle (e.g. +) without soldering them together. The ...
4
votes
1answer
1k views

a strand of usb cable is yellow not black

I cut the wire of a USB keyboard to supply 5V power to my Arduino. I expected to find Red wire for +5V, Black for GND, White for D-, and Green for D+. However, there is no Black, instead, there is a ...
5
votes
6answers
1k views

How to fuse wires into single solid thread?

I'm trying my first real project with an arduino of my own design/idea. I come from a CS background this EE stuff is both exciting and scary. I'm trying to wire up a 3.5mm female audio jack to the ...
3
votes
3answers
419 views

Are jumper wires just wires with insulation cut off on both ends?

Is there a specific purpose for jumper wires like these where they have female pins at the ends? I'm assuming they are mainly useful when you want to chop a wire into something like a breadboard, but ...
1
vote
1answer
189 views

relationship between temperture, current, thickness, and material

I used lan cable for light LED up on my bread board power source is PC's power supply. without any resistor, the lan cable melt! I reallize I have to keep OHM's law in my mind and use proper ...
3
votes
2answers
307 views

Lengthen a AC to microUSB phone charger cord?

Can I effectively take a 3 ft standard cell phone charger (AC to microUSB, 750 mA at 5V) and lengthen the cord to 6 ft by splicing the cord or am I going to lose something in the mix? Do I need to ...
4
votes
4answers
4k views

what size of copper wire can act as a 150A fuse?

If I would like to use a piece of copper wire as a 150A fuse, what size of wire should I use? It doesn't have to be 150A very accurately, the parameters I need the wire to meet are: it needs to ...
4
votes
2answers
268 views

What are these wires with pre-attached connectors called?

What are these connectors commonly called, and what would I search for if I wanted to buy sets of male/female pairs with a specific gauge of wire pre-attached?
9
votes
5answers
1k views

Tips for keeping lots of cables tidy

I'm working on a project with a lot of external peripherals, so this means lots of wires. Any recommendations on how to keep them tidy while working on it? I don't want to use cable ties just yet, as ...
2
votes
4answers
2k views

Questions about wires in a DB9 cable

I stripped a DB9 extension cable which I will use to connect to a DB9 connector on one end and an RJ45 on another. I need to make connections to pin 2, 3, and 5 on the DB9 side. When I stripped the ...
4
votes
1answer
831 views

Can a small gauge wire be used in a fractal antenna?

I want to make a fractal antenna to replace an old set of rabbit ears. All the guides I've seen have used a thicker wire (metal coat hangers seem popular). While I don't have any hangers, I do have an ...
3
votes
2answers
366 views

What wire do I need to carry 30 A for 18"?

I have an 11.1v lithium polymer battery pack which has 1300 mAh capacity and has a 20 C rating. Therefore I figure the maximum amperage the battery can supply is 26 A. (C * mAh / 10001) To be safe, I ...
5
votes
4answers
408 views

is the resistance in ten meters of copper wire too high to use in a circuit powered by AA batteries?

I have a wireless security system at home, and the wireless node is too far from the receiver. I was thinking that I could splice about 10 extra meters of wire into the existing line to move the node ...
3
votes
2answers
4k views

Arduino Input/Output Range (Cable Length)

So I have this crazy idea to illuminate a few Christmas lights on the exterior of my house this weekend. I plan on running 2 Cat5e cables about 11.5 meters (~38 feet) from an Arduino board to sensors ...
10
votes
6answers
11k views

How do you remove insulation from headphone wires?

How do you remove insulation from headphone wires (these tiny) to prepare it for soldering?
21
votes
3answers
48k views

Headphone wire color coding

How do I tell which wire is which if I have a copper wire, red and green coded wire? Is the unshielded copper wire ground?
4
votes
4answers
1k views

What is the best wired protocol choice for home automation?

I know the X-10 protocol. X-10 is a good choice or is there better?
2
votes
2answers
1k views

How to modify stranded wire for use in protoboards?

I decided to start working with hobby electronics, but I'm having a problem finding a local source of solid wires. As far as I know solid wires are often recommended for use with protoboards because ...
3
votes
4answers
3k views

3 Wire Digital Scale Strain Gauge Weight Sensor

How do I connect/use a 3 Wire Digital Scale Strain Gauge Weight Sensor? I took it from an old weight meant for people. :) The wires are red, black and white. I found this, ...
2
votes
2answers
641 views

Cheap solid equipment wire for breadboard from online shop? [closed]

I need breadboard wire for fast prototyping. It can apparently be 22AWG or 24AWG, acccording to this reply about stranded VS solid wire. Because it is for prototyping, I am not looking for expensive ...
6
votes
6answers
422 views

Shielding Techniques for Digital Sensor

What shielding techniques would be best suited for a digital sensor (3 wires - Pwr, Gnd, Sig) in a noisy environment (specifically fluorescent lighting)? Twisted pair (trio in this case) works well ...
6
votes
4answers
1k views

Source for flexible, stranded wire

Can someone suggest a source and part number for insulated, stranded small-gauge wire (around 22AWG) that is flexible and doesn't hold its shape? Something along the lines of the wire found on ...
6
votes
1answer
2k views

Virtual Wire Control

I'm running Virtual Wire between two Arduino's and, so far I've been able to send characters and receive them on the other side. Problem is, how do I turn this received 'A' (or whatever I send) ...
5
votes
4answers
200 views

Steam plant data logging

I was trying to design a data logging application using something like a www.ruggedcircuits.com gator+ board with some sort of rugged zigbee module for measuring principally steam pressure (to 110 ...
7
votes
3answers
192 views

Wire to use with Sensors

I am trying to minimize interference in a sensor project. Can anyone recommend a good shielded wire I can solder into my board?
22
votes
12answers
7k views

Stranded vs solid wire

What are the advantages of stranded vs solid wire? what should i be using for prototyping circuits?