Questions tagged [cables]
Questions about cable types, properties, ratings and construction.
956
questions
7
votes
6
answers
12k
views
Does Fibre Optic Cabling have any potential for noise?
After Google searching "Do Fibre Optic Cables attract any noise", most results return that they attract virtually no noise. Is this the case or are there some exceptions?
- 1
0
votes
1
answer
25
views
What is the difference between 3 Phase volt drop and Impedence ratings for 4 core cables?
Looking at ratings given for some cables, there is a 3-phase Volt Drop given in milli Volts/Amps/meter, and there is an impedance rating given in Ohms/kilometer. These 2 units are equivalent, but the ...
0
votes
1
answer
46
views
What are the outputs from my cable?
I am in the process of building a microphone connected to a Raspberry Pi Pico. To check my expectations are correct, I have bought a pre-assembled electret mic and amplifier. The issue I have, is I ...
- 19k
0
votes
0
answers
74
views
How to connect cable shield when receiver side powers signal source?
I have element 'A', the receiver, connected to earth, which powers modules 'B' and 'C', the signal sources, unconnected to earth. 'B' sends a differential line signal, and 'C' sends an analog signal. ...
- 3
11
votes
4
answers
2k
views
Cable shielding (best practices)
I am making a cable to connect two boards as shown in the image below:
The cable will be around 25 cm long and will be in an electrically noisy environment (consider 220 VAC house wiring lines ...
- 27.5k
0
votes
1
answer
646
views
Is there a way to terminate a two conductor cable to a BNC plug?
I have a device with a two conductor cable that I need to interface to a signal conditioner with a BNC input (same as that on a standard oscilloscope). I would rather not use a hacky solution like a ...
CommunityBot
- 1
0
votes
1
answer
24
views
Maytag MDB9100 connector to circuit board
I'm replacing the circuit board on my Maytag MDB9100 dishwasher. I'm having trouble connecting the white and black connectors on the bottom edge of the new circuit board. Everything else has been fine....
- 8,737
0
votes
1
answer
69
views
USB C - USB A cable connection for power source
I'm trying to power a small microcontroller board using the USB-C of a smartphone, to do so I took a USB C - USB A that has 4 lines (Vcc, GND and 2 data), but I'm not able to get 5V out of it.
Simply ...
- 29
3
votes
1
answer
99
views
Identifying this coax connector?
Circular 1-pin coax connector. Trying to identify so I can buy a new socket for it.
- 33.4k
30
votes
8
answers
16k
views
Can I use I2C over 2m cables?
In my current project, I need to communicate between a microcontroller and some sensors over I2C. One of them is a temperature sensor, it needs to be placed at approximatively 2 meters far from the ...
- 3,151
0
votes
1
answer
403
views
USB data and power cable with switch to power Arduino. Is it a safe design?
I have some projects with Arduino and a separate battery power source and I'm tired of plugging and un-plugging my usb cable when to program the arduino using my laptop USB. Sometimes it even broke ...
- 171k
25
votes
4
answers
5k
views
Pass USB 3.0 connection through D-SUB connector
I need to pass a USB cable through a vacuum chamber wall, for which we have only D-SUB passthrough flanges available. So I cut a USB cable in half and soldered a D-SUB connector to each half. For USB ...
- 1
2
votes
1
answer
1k
views
How can I remove the label from heat shrink tubing?
I want to use heat shrink tubing on the jacks of an instrument cable I'm making (like in the photo below). The problem is that the tubing I have has a label printed on the side with the size and such, ...
CommunityBot
- 1
1
vote
1
answer
41
views
Fixing SMB adjustable contact to its SMB connector (Jack)
I recently purchased an SMB adjustable square flange jack connector: R114413000 [Partlink].
In the bag, I receive the adjustable contact and the connector:
How do I fix this adjustable contact to the ...
- 18.9k
0
votes
1
answer
594
views
Addressable LEDs (WS2815): power and data in a multicore cable
Would it be possible to use a multi-core cable to have power and data in the same wire?
I'm using WS2815 LEDs. The total current needed is 9.6A. For a cable of 8 meters, a 2.5mm wire is needed. ...
CommunityBot
- 1
0
votes
1
answer
303
views
Cable for MEMS Accelerometer
I am using a MEMS Accelerometer (ADXL1001), along with the EVAL board and an NI 9234 DAQ module to acquire the signal. I am using a RG58 coaxial cable to connect the sensor output (2 connector pins, ...
CommunityBot
- 1
1
vote
1
answer
58
views
Help me identify the cable for this
I am trying to find the audio cable for my sub system but I can't find it and don't even know its name.
I would appreciate your assistance.
- 2,536
0
votes
1
answer
69
views
What's the Purpose of pin 44 on IDE cables
So I was looking at the pinout for 44 pin, notebook type IDE cables, and the 44th pin is listed as /TYPE : Type (0=ATA), what use does it have?
- 138k
0
votes
1
answer
447
views
Detecting cable is connected
I'm trying to figure out a way to detect if a RJ45 cable is connected, and report that to a microcontroller. I'm not using the IP standard, I'm purely using the cable for the ease.
A bit of reference:
...
- 90.8k
18
votes
3
answers
3k
views
What does an EV "wall socket charging cable" do?
Known as "Mode 2 charging", this method of charging electric vehicles describes the use of a common household wall socket and common mains voltage (230 v) to charge the vehicle. This is ...
- 90.8k
0
votes
2
answers
420
views
How to wire up two RJ45 sockets?
I'm having a hard time getting my head around this! It ought to be simple, but ...
I have an internet feed at one end of my house with a small router/modem thing. From there I connect a Cat-5 cable ...
- 11
37
votes
3
answers
7k
views
What are those weird wires in the audio cables?
Trying to repair a headset cable, I discovered that it doesn't look at all like the “ordinary” cables I used to repair. I was expecting to see, inside the cable jacket, four wires, each one in a wire ...
- 11
4
votes
2
answers
303
views
Small particles from broken iPhone charging cable
While trying to fix an iPhone charging cable, I noticed I had some small particles on my fingers, that looked like metal. I wonder if any of the materials I touched and manipulated could have released ...
- 78.1k
3
votes
1
answer
247
views
How to choose the right flexible cable for moving parts?
Is there a generally accepted guide to select a cable, which has to withstand certain bending stress?
I am looking for something like this:
...
CommunityBot
- 1
2
votes
2
answers
316
views
Splitting CB Radio Mic Inputs?
I just purchased my first CB radio and I am looking to split the microphone's output such that it can go to two outputs (the radio itself and custom electronics I plan to design).
I'm using the Uniden ...
CommunityBot
- 1
0
votes
2
answers
456
views
How should I test my USB cables?
Some time ago, I purchased the FNB58 USB multimeter from FNIRSI with the intention of testing some of my USB cables. Ideally, I wanted to throw away those that are redundant and/or those that pose a ...
- 111
0
votes
2
answers
211
views
Confused on how to wire a Laptop Heatsink/Fan
thank you so much for taking some time out of your day to answer my question.
I have bought this Laptop HeatSink/Fan combination and it comes with a molex connector at the end of the wire to attach ...
CommunityBot
- 1
1
vote
0
answers
60
views
LED strip cable and connector sizing
I'm trying to power a LED strip. It contains 140 WS2812B with 60 LEDs/m so it is around 2.3 m. According to the datasheet, the LEDs has a 60 mA current consumption. Based on the pure math its 140*60 = ...
- 13.8k
1
vote
2
answers
97
views
How to determine ground and power wires in USB 2.0 with not standard colors? [duplicate]
My USB 2.0 cable has 4 wires: blue, white, yellow and transparent. I want to connect it to a LED strip that has 2 wires: red (+5V) and white (GND). How can I find ground and power wires among those 4 ...
- 7,013
1
vote
1
answer
79
views
Pluggable cables for laptop computer power adapters
It has been nearly universally the case that the cable which connects an external power adapter (power supply) to a laptop computer is permanently fixed to the power adapter. This makes the cable more ...
1
vote
1
answer
4k
views
How to calculate power loss & voltage drop in three-phase power cables
What is the correct formula/method to calculate cable power losses in a three-phase system? I'm unable to find any IEC standard outlining the same.
If you consider 3C/4C cables, the manufacturer ...
CommunityBot
- 1
3
votes
3
answers
966
views
How to make sense of USB connectors?
It seems USB connectors have 4 dimensions:
Type A, B, or C. And sometimes type AB.
Full, mini, or micro.
Male or female.
USB version.
Surprisingly, I can't find a good reference on those. If, for ...
- 12.1k
4
votes
4
answers
1k
views
What connectors do these power supplies use?
I found a few power supplies which I need for my projects. The only problem is connecting them, I have a few sockets, which are unknown to me. I can disassemble PS of course and replace sockets yet it ...
- 18.9k
1
vote
1
answer
140
views
Tinned copper for SPI?
I'm currently doing some repairs on a project that requires linking 1m strips of APA102C LED pixels in series to form a grid. I've always used bare copper for this purpose, avoiding the tinned copper ...
2
votes
1
answer
576
views
Are the USB-C D+ and D- shorted to its duplicate pair pin?
Is the usb type C connector Data + and Data - are shorted to its pair on the opposite side?
Are the Vbuses shorted to the other V buses?
And does the question above still hold true/false if the cable ...
- 125
2
votes
2
answers
901
views
Fixing the pins in a flex cable
This is a flex cable from a kindle that connects the motherboard to the lcd.
The pins at the edge are broken and not making any contact with the connector.
Is there any salvation for this?
If there's ...
CommunityBot
- 1
0
votes
2
answers
68
views
How to find where a jack stereo cable is interrupted
I have a jack stereo cable like the one in this video.
It stopped working correctly (only one side of the audio could be heard), and when I unscrewed the male and female plugs, both looked a bit iffy.
...
- 13.8k
0
votes
1
answer
342
views
How can I couple relay chattering noise to a data cable?
How the chattering of relay causes noise ? Is it its on-off sound makes the noise?
I want to know how to couple a relay chattering noise to a data cable.
CommunityBot
- 1
2
votes
1
answer
449
views
Cable shield connection: ground or earth
I have an analog sensor which features 3 wires: power supply +, ground (common for supply and signal output) and signal output iself. Sensor is working in industrial environment. I am using shielded ...
CommunityBot
- 1
0
votes
1
answer
391
views
Connecting balanced low impedance output with unbalanced high impedance input
I want to send the signal form my audio interface to the guitar pedal effect. I'll use interface's line out balanced output and plan to plug it in to the effect pedal which has high impedance ...
CommunityBot
- 1
8
votes
3
answers
870
views
USB cable wiring inside the device
I'm designing a compact product consisting of several independent PCBs, which all should be permanently connected via the custom USB2.0 hub inside the device. The required USB cables should only be a ...
- 39.4k
0
votes
2
answers
171
views
Twisted Triad vs. Twisted Pair for RS-485
I'm looking for information regarding twisted triad vs twisted pair cable use with RS-485, especially in applications with long distances outdoors.
With twisted pair like Belden 3105DB, the drain is ...
- 12k
2
votes
1
answer
263
views
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 ...
3
votes
1
answer
96
views
Pump motor fails to start when connected to a low frequency inverter via a long wire [closed]
I've been struggling with a submersible pump showing unreliable behaviour when connected through a long cable to a low frequency inverter.
The pump is used only once a week to fill up 3 5000 L tanks. ...
- 7,926
0
votes
1
answer
170
views
PG&E's Groundline distribution system
The other day I saw an article reporting how PG&E is planning to use "tech" to achieve its target to underground 10,000 miles.
They demo'ed something called a "Groundline ...
- 1
0
votes
1
answer
37
views
Does the quality of USB cable affect the power drawn?
I was wondering how the power drawn is affected by different cable? I tested two different types: A USB cable plugged to a USB digital tester which showed a power of 4.88 V and 2A drawn, whereas the ...
- 33.4k
0
votes
0
answers
47
views
What to look for when selecting a cable for transmitting multiple types of signals in a moving environment
I'm working on a device that involves transmitting data between a microcontroller and an IMU device housed on a different PCB. The two are connected via a cable using a mini DIN connector. I've ...
- 329
3
votes
1
answer
127
views
Can you separate the D+/D- wires from the GND/Vcc wires in a USB 2.0 cable?
I am currently designing a wiring loom which includes USB 2.0 cable within it. It is critical that the thickness of this leg is as thin as possible due to the constraints of my client. Unfortunately, ...
- 27.5k
0
votes
1
answer
43
views
Are there drawbacks to connecting a remote diode temperature sensor through a connector and cable interface?
I would like to connect an external temperature sensor (external to the PCB) to a the DP/DN pins of an EMC2103 fan controller. My plan would be to use a twisted pair cable with a generic TO-92 remote ...
- 16.3k
2
votes
1
answer
135
views
Do any of these extension cord markings indicate it is double insulated?
I am attempting to "verify" that a 14/3 extension cord is double insulated by means of a label or marking. It is indeed double insulated because it is severed at one end and it is apparent ...