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

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0
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2answers
169 views

Is it possible for an energy source of 4.7mW to heat a Nichrome wire to 800°F [427°C]?

I am trying to understand if it will be possible for an energy source with an output of 4.7mW at 47% efficiency to power a 35AWG Nichrome wire (think dime sized coil) to 700-800 degrees F. If it is ...
1
vote
2answers
95 views

DD50 equivalent?

I've been looking around and can't find a definitive answer, so I figured I'd ask here. I'm completely new to electronics. This past Fourth of July I made a simple firework launcher using DB15 as the ...
4
votes
2answers
348 views

Does solid/multi-stranded/Litz wire make a difference in binary serial output?

I'm using two shift registers to control 16 digital outputs using only 3 pins on my microcontroller. The parallel outputs carry <= 20 mA DC, their sole purpose is to power LEDs. My microcontroller ...
1
vote
0answers
86 views

Inferring number of strands from AWG -> mm

If there is "16AWG" 1.34mm CSA wire, is it possible to figure out the strand count? I am thinking it might be possible as AWG is about overall diameter. So 16AWG should have a diameter of 1.291, but ...
1
vote
1answer
167 views

Physical Wire Size Confusion

I'm going to get this wire for a simple project, and I need to get some heat shrink for it. My problem is that I can't figure out the diameter of the individual insulated wires. There are going to ...
0
votes
2answers
549 views

How much power dissipated in a wire?

i"m designing a long metal1 wire. The parasitic capacitors and resistors are callculated. I want to have an ac voltage at the output end of the line ( 0 - 3.3 V ) at 1GHz. How can i calculate the ...
2
votes
1answer
272 views

How to connect to 30 awg Nichrome wire to 28 awg wire?

I'm looking for a quick way to connect my 30 awg Nichrome wire to some 28 awg stranded wire and have tried an inline splice and crimped-on receptacles. For my project I'll potentially be making lots ...
6
votes
4answers
18k views

Physically determine unknown wire's gauge

Is there any way to easily and accurately determine the gauge of stranded wire by measuring it? I know you can pretty easily determine the gauge of solid-core wire with just a pair of calipers by ...
0
votes
1answer
93 views

Should I use Magnet Wire as a conductor in this experiment?

I need to run a few wires from a HMC5883L compass sensor to a micro-controller to process the data. Can I use magnet wire to carry the signals from the sensor to the micro-controller or would the ...
2
votes
2answers
1k views

What is the welding technique heater manufacturers use to connect nichrome wire to copper terminals

I have made hundreds of very reliable nichrome to copper connections using a torch and silver solder (brazing). Due to the high cost of silver I would like to investigate the welding process that ...
6
votes
2answers
2k views

Can you send data usefully over one wire, literally one wire?

It is possible to design networking systems that only use two wires: one for data and one for a common ground. Examples include 1-wire and Pin&Play. These are called single wire systems because ...
2
votes
3answers
2k views

Strange I2C behavior: sometime it works, some time it doesn't

I am using Arduino Ethernet with PoE and Arduino Uno boards. In recent days I implemented a working I2C bus by using the Wire library and all it seemed almost to ...
5
votes
2answers
5k views

Will crimped wire or soldered wire carry a current better?

I am running a 160amp DC current through a 1/0awg wire. Will the connection be more reliable with crimped connections, soldered connections, or screw terminals? I have looked online and it seems ...
-1
votes
2answers
812 views

How do I calculate the voltage needed to heat up a wire to a certain temperature?

The wire I am using is standard temp. nitinol wire which needs to be heated up to 45 degrees Celsius in order to be effective (move). What voltage do I need to achieve this?
2
votes
2answers
807 views

How can I power the blue LEDs separetely on this aquarium light?

I have a Beamswork LED aquarium light like this. It has a 3 way switch: All LEDs off Blue LEDs on only White AND blue LEDs on It has a single mains power plug. What I want to do is make it have ...
-1
votes
3answers
623 views

Wires resistant to frequent bending for use in headphones

I'm tired of continuously fixing wire on headphones. Can you recommend good wire that resistant to the frequent bending and thus will be last ultimate replacement as headphone wire ?
2
votes
3answers
659 views

Coaxial cable theory

Well I was learning transmission but I got a bit confused when I came to coaxial cables transmission at radio frequency. What I am lost is how the waves are propagating in the cable, I was thinking ...
2
votes
3answers
2k views

Checking materials (cheapest possible) to be used for a solar dark-detecting LED light bulb circuit

I want to make this circuit, which includes a joule thief: It's for a solar dark-detecting LED light; and I'm trying to follow this guide: ...
3
votes
1answer
199 views

Which tool do I have to use for wire connector?

I want to make the wire connector as the screen below. What tool do I need to use and how can I make it?
2
votes
1answer
183 views

Limitation of baud due to propagation of voltage over distance

I need to make sure I have my facts straight here; the math works but I may be missing something: In a 100BaseTX network over Cat-5 copper, each party has a circuit (one twisted pair) on which they ...
2
votes
2answers
143 views

Mains on a single core wire?

I have some single core wires normally used in simple breadboard circuits to handle 5V. I have built a power supply circuit on a perfboard, with a standard transformer + capacitor + 7805 build. Can ...
15
votes
5answers
13k views

How to use a capacitive touch screen without a human hand

I'm a programmer, and I usually hang out over on stack overflow, but I have a electricity question. I'm trying to interact with an APP on my phone by indirectly touching the the screen. Modern ...
-3
votes
3answers
14k views

Are all of the wires in headphones copper?

My broken headphones have different colored wires. Are the red, green and blue ones also copper?
3
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1answer
31k views

How to calculate voltage drop over and power loss in wires

How do I calculate the voltage drop over wires given a supply voltage and a current? How do I anticipate on voltage drop so that the final load has the correct supply voltage? What will be the power ...
-8
votes
2answers
615 views

wire limits when attached to high voltage 220v [closed]

I have my home electricity wires, and I want to attach directly a set of wires that will be plugged into a controller box with power supply. that power supply was a phone charger that i adapted into ...
19
votes
5answers
3k views

Wire broke off and stuck in a header

I'm working with an Arduino, and one of the stripped portions of the wire broke off at some point and managed to get pretty wedged into the 5V pin slot. Obviously, this wouldn't matter as much for a ...
6
votes
2answers
285 views

Why do some wires in my turntable have plastic covers over them?

I recently purchased a turntable. I spent a good chuck of cash on it - and it sounds great but has trouble keeping speed. I am starting to retrofit it with a brush less motor that will be controlled ...
3
votes
2answers
585 views

I2C Capacitance

I'm using an I2C interface for my e-compass and controller. The capacitance of the e-compass I2C pin is 20pF, and that of the I2C controller is approximately 40pF. But the problem is: I want to use a ...
10
votes
3answers
1k views

Crimping tool basics

When I design a printed circuit board, I often put 100mil male header anywhere. Sometimes I think it would be better to place some connectors for more reliability. Anyone here knows which ...
1
vote
2answers
952 views

Thin profile wire joins and forks

I've a project where I'm installing some LED lighting. I am currently using crimp connectors and electrical tape to join two pieces of wire or fork wire, but I find this to be ugly. I would like to ...
1
vote
7answers
2k views

What thickness of wire should be used to power Arduino on 9 meters?

I have built a standalone Arduino device which has a few buttons, LED's and one servo. I also have a power source which on the casing says 4.9VDC ~ 700mA. (Actual reading is 5.7V). This power source ...
6
votes
2answers
7k views

How to remove enamel from wire?

I want to repair my computer mouse cable which has become disconnected from the PCB. The wire is insulated with enamel and I have to remove it before soldering it back onto the board. How should I ...
7
votes
2answers
942 views

What factors affect the brightness of electroluminescent wire?

I'm interested in experimenting with creating my own electroluminescent (EL) wire. I've seen some videos on creating your own by Jeri Ellsworth. I have a few additional questions. I understand that ...
7
votes
1answer
400 views

power cable: more strands, or bigger strands?

I have two types of 4awg wire to chose from to wire an inverter in my jeep. One of them has about a dozen 20awg wires inside of it, and the other has about 100 super little wires inside of it. Both ...
-2
votes
3answers
352 views

Prevent Water Piping from Freezing (price is everything) [closed]

I realise that there are a bunch of specific pre-made solutions for preventing pipe freezing but I think I should be able to do it way cheaper myself (I am assuming that the pre-made stuff has quite a ...
4
votes
3answers
5k views

If a wire is rated 10A, 120v AC. How many amps could I put through it of 13.8v DC?

I am using a wire that is rated 10Amps at 120v ACwith a car headlight and a SLA battery. About how many amps could this wire carry before getting warm or melting of DC current at 13.8volts?
2
votes
2answers
12k 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
votes
2answers
162 views

individual ethernet cable wire uses

I'm going to use ethernet cable as a long range cable for serial (5v) and power (5V and 16V, almost no A) and I remember reading that because of the loops in the wire and the impedance effect some ...
-2
votes
2answers
26k views

4 colored wires in a cellphone charger [closed]

I'm trying to recycle an old cell phone charger to power something else. I've cut the tip off and I see 4 wires... with following colors: red, green, blue, and yellow. I can't figure out which ones ...
1
vote
1answer
62 views

How long a lead may be used to connect a component to a circuit?

When out of town I'm thinking of using an LDR with a 555-relay driver to periodically toggle the lights in a few rooms at night, and a thermistor near an incandescent bulb to kill the circuit when the ...
3
votes
2answers
1k views

What use is the reference node in nodal analysis?

Rules for identifying a reference node in a nodal analysis of a circuit include; Node with largest # of elements Max # of voltage sources Node of symmetry My question is, whats the point?
2
votes
2answers
577 views

How to fix a broken sub connection and wire?

The wire connecting to my sub has snapped off, and it brought the metal connector piece with it. I don't want to buy a new sub, but it looks like this is going to be hard to repair. Anyone have ...
5
votes
3answers
485 views

Name of connector for attaching to bolt

I have a heating element (essentially a very resistive wire) that has two threaded bolt-like connectors on each end. I want to avoid soldering any components of the heating element, so I asked a ...
2
votes
1answer
199 views

Is it possibile to manually wire a displayport cable?

I have to pass such a cable trought a small hole in a wall. Since that the connector is to big to pass trough, the only way to do so is to cut the cable, pass it and than wire it manually. Do I have ...
4
votes
3answers
6k views

How can I find out which wires are the primary wires on this transformer?

About the amp: This is from an old solid state audio amplifier with an AM/FM tuner. No digital parts or ICs were inside. It was all point to point. Unfortunately I threw out the amp and didn't write ...
6
votes
1answer
756 views

Difficulties of I2C over wire

I want to link a PIC16F1825 and a TCN75 temperature sensor via I2C. The temperature sensor is about 1m from the MCU. Can somebody enlighten me on whether and what kind of difficulties I am going to ...
16
votes
5answers
6k views

Standard wire colors

I am fairly new to "electrical" engineering as a hobby/ past time. I have always loved electricity and have made simple circuits since I was a little baby. I am now working on one of my first ...
5
votes
2answers
4k views

What does A x B mean when referring to wire strand count?

Stranded wire is often specified using two numbers in the format A x B. For example, 16 AWG wire might come with a 19 x 29 strand count. What do the first and second numbers mean?
22
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2answers
2k views

Alternatives to SPI because of EMI

I currently make a system consisting of a plastic enclosure which contains an MCU talking to 7 ADCs using 2MHz SPI over wires about 5cm long. The problem is that I'm concerned about EMI. ...
0
votes
1answer
1k views

about power supply on what length of copper wire we should use

Could you help me on the equivalent current of three phase alternating current having 400v( volt ), 530 kw power and the available cross-sectional area of a copper wire, its length 350 m for carring ...