All Questions
Tagged with wire resistance
44
questions
0
votes
2
answers
153
views
How can I find the diameter of a wire if I have the length and resistance? I cannot use measuring tool because wire is thinner than 0.1 mm
As the title suggests; I am trying to calculate the diameter of a wire given its length and resistance.
Specifications:
Length: 30.4 cm
Resistance: 17 Ω
- 117
0
votes
2
answers
60
views
What happens if a 5 V 2.4 A supply is connected to a 21 gauge nichromium wire of 0.79 ohms/ft?
If I connect a USB power supply, rated for 2.4 A max. at 5 V, to a 1 ft 21 gauge nichrome hot wire (resistance 0.79 ohms/ft), what would happen?
Would the wire still heat up, but not much, or will my ...
2
votes
3
answers
111
views
Does wrapping kiln resistance wire back on itself reduce the temperature of that stretch of wire?
When replacing the resistance wire in an electric kiln, most manufacturers recommend wrapping the resistance wire back on itself at the ends where it connects to the electrics. Although I haven't ...
- 123
3
votes
3
answers
673
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Temperature of resistance wire
I am building a smoke generator based on heating mineral oil with a resistance wire. The smoke will be used for automotive diagnostics. I've read on this site where calculating the temperature of the ...
- 31
0
votes
1
answer
509
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Calculating the resistance of an aluminum wire
I am calculating the resistance of a 500 m aluminum wire with a 10 mm (AWG #2/0) diameter. I calculated the resistance according to this video, but I would like to double check with the community here ...
- 1
0
votes
3
answers
260
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Voltage-current relationship in the wire
I'm reading Art of Electronics by Paul Horowitz and Winfield Hill. Although it is a well-written guide to electronics, I'm stuck with the first topic.
I would appreciate any answer that can help me to ...
1
vote
1
answer
191
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30ga Kynar wire-wrap insulation withstand rating?
I commonly use 30ga Kynar (Polyvinylidene Fluoride, PVDF) wire for PCB <=24 VDC repairs.
But can it be used to repair 120 VAC signal wires?
Strangely, vendors do not seem to publish a voltage ...
- 16.3k
3
votes
2
answers
221
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How to coat a thin electrical wire with carbon?
I am looking for glue that can be used under a bio-solution. The solution is a bacteria culture solution (LB, SB). I have a chamber filled with culture solution and I would like to extend an ...
- 77
2
votes
1
answer
341
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CCTV cable power rating?
I want to know whether I can use this d-link 3+1 CCTV cable for powering an led strip which runs at 12 volts 1 amp. The led strip is approximately 12 meters away from the smps power adapter. I checked ...
- 690
4
votes
1
answer
2k
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Why does same size AWG solid and stranded copper wire have such different resistance?
When I measure a stranded copper wire or see a resistance spec from mfg it is about 25% higher than what is listed in the tables I see online for solid copper wire. About 1 AWG difference. ex: 10 ...
- 147
2
votes
1
answer
171
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What are the possibilities to increase temperature of resistive wire?
I recently got stuck on heating up a resistance wire. I have 80cm long resistance wire (from hair dryer) that I need to heat up to about 160°C. Currently I have a battery pack that produces 33.6V DC ...
- 29
1
vote
1
answer
5k
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stranded wire resistance compared to solid wire
Why is it that a stranded wire has higher resistance than a solid wire?
Although the area of the stranded is more which means more skin?
""The resistance of the stranded conductor is ...
- 883
0
votes
1
answer
139
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How to balance resistance between speaker wires made of copper fabric?
I'm working on an art installation where the speaker wires are made of a copper fabric material, a relatively high resistance material. I understand this is not ideal for speakers, but due to ...
- 423
0
votes
2
answers
328
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Can a PTFE coated wire heat up enough to be used as a heating element [closed]
I saw a comment on another post about using PTFE coated copper wire as a heating element for a thermos. Would this setup really work under low power(the comment said the source was a usb port) as I ...
4
votes
4
answers
3k
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How to calculate maximum input power on a speaker?
I got into this rabbit hole while trying to replace the speaker wire in my setup. I have speakers with 8 Ω of resistance (Rspeaker) and a maximum input power of 140 Watts, so I wanted wires that would ...
- 49