Questions tagged [cables]

Questions about cable types, properties, ratings and construction.

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2answers
51 views

Best way to interface panel mount buttons as this one

I need to work on a panel for an industrial product. The idea is that the signals from these buttons go to a PCB with an MCU which then communicates with a central MCU about the state of these buttons....
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1answer
32 views

reading specification sheet of a cable

I'm having trouble reading the following specification sheet: https://www.molex.com/pdm_docs/ps/PS-15166-001-001.pdf if it doesn't work, I just pressed the datasheet button in this product: https://...
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1answer
41 views

DVI Hot Plug Detect

I am making a custom cable from a VPX backplane to a DVI-I connector, and need to know if the DVI cable will work ok with a standard monitor if I do not wire up the hot plug detect pin. I will never ...
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1answer
523 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, ...
0
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2answers
103 views

What are these wires in my switch? [closed]

I’m working on an Arduino project for switching my light with it, but in my switch, there are two wires (if I count in/out as one.) I don’t know what the second one is. When I measure voltage between ...
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1answer
98 views

How to disconnect this kind of cable connector?

I'm trying to disassemble a part of my washing machine to clean it, but I'm struggling removing a white plastic cable connector. Here's a picture of it I've tried removing it by twisting it, and with ...
3
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1answer
1k views

Maximum length of high-speed LVDS cable in automotive environment versus using SerDes

I would like to connect a small TFT display that uses LVDS, 4 channels for data and 1 channel for clock. Data rate is maximum 200 Mbps per lane. Very strict EMC requirements are applicable, namely ...
3
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0answers
63 views

What determines the voltage rating of a cable?

I'm trying to figure out the maximum voltage of some cables in a vacuum system I've inherited, and I'm confused by the DC voltage ratings given by this supplier as they step from the 3 kV to 10 kV ...
3
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1answer
94 views

What is this connector/plug called?

I have found this cable several months ago with old electronics (it is more than 5 years old, I'm sure.) For more than a week, I have been looking for the type of plug shown in the photos on internet ...
0
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1answer
63 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 ...
1
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1answer
177 views

Replacing an old dart board ribbon connector - need advice

I hope this makes sense but I have an old dart board that is having some issues I believe is related to the cable in the link below. The cable is a ribbon cable I believe and toward the bottom there ...
0
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1answer
52 views

How can a cable tester verify correct shielding/twisting of wires?

Background: The company I work for makes a variety of special-purpose cable assemblies to go with equipment we make. The people who build these cables aren't doing a 100% reliable job, and nobody ...
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2answers
58 views

Calculate maximum allowed current of a cable with AWG, length, and voltage? [closed]

How can I estimate the maximum current of a cable with thickness, length, and the voltage? Assuming that the material is cheap aluminium, not expensive copper, and in room temperature. For example, ...
7
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7answers
3k views

Cable standard for data and power

I am looking for a cable standard to control and power a device from its controller. I need to send 5V/10A but also control (not sure yet what protocol it could be but I don't need a high speed, 9600b ...
3
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2answers
122 views

Spiral hoar frost and spiral device around telephone or electric landlines

I live in Germany. When I travel by train, sometimes there are cables that run from pole to pole parallel to the train track. From the lack of insulation between wire and pole, I guess these are ...
53
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10answers
42k views

Why is an Ethernet cable not grounded?

There is no dedicated GND in the classical Ethernet 8P8C ("RJ45") pinout.[1] Why does the Ethernet spec not include a ground, unlike many other cable types used for interconnecting devices that may ...
3
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5answers
2k views

Signal and power cable over long distances

I am working on a hobby project where I am trying to build a ROV (Remotely Operated Vehicle) for underwater use. The ROV will have some electronic parts, that are powered with 12v and 5v, that I have ...
24
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6answers
8k 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 ...
0
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1answer
41 views

How do I connect micro Molex to nano Molex socket?

I have a Molex cable that has a bigger size than its socket. My problem is how do I connect the cable to its socket? I sent this picture about comparison cable and the nano socket exactly in front of ...
1
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0answers
32 views

What is the proper reference designator for a ring terminal in a cable drawing?

I am working on some cable drawings that utilizes ring terminals that connect on a relay terminal. Initially, I was using T as the reference designator for them, but I realized that is incorrect since ...
0
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1answer
215 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 ...
0
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2answers
94 views

Is there a design tool that tells you what gauge of wire to use? [closed]

Do any circuitry design tools (5spice, etc.) have a feature that tells you what currents you'll have in each wire/cable, and recommend therefore which gauge of wire or type of cable to use for each ...
-1
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1answer
92 views

What happens inside this duct?

At the top are wires coming out of a terminal block. On the left are gray tubes running into a cabinet full of sensors, motors, etc. Are these gray tubes conduits or cables? What is happening at the ...
4
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1answer
819 views

Convert 'dB per 100m' to 'dB per 1m'

I want to know about wire loss per meter. However, in the datasheet, it is written that 6.1 dB is attenuated per 100 meter, so I wonder if it is possible to simply calculate 0.061 dB if I want to ...
0
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2answers
79 views

How to describe the basic cabling used in industrial electrical panels?

How would the basic cabling in electrical panels be technically described (in order to make a purchase, for example?) Does it have a certain number of cores? I'm talking about the kind of cabling you ...
0
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1answer
249 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.
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1answer
101 views

Lazer wifi connection [closed]

Would it be possible to create a Wifi cable that uses lasers to send information at light speed?
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2answers
91 views

Ethernet over individual wires

I am doing the integration of an aircraft device that uses Ethernet 100BASE-T as its main communication line. The manual says the device comes with its own testing cable which is approximately 2 feet ...
0
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1answer
353 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 ...
1
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1answer
83 views

What is this USB mini-b like cable?

What is the cable on the left? It is supposed to be a cable for audio input for older gopros (in my case the 2014 hero), but my GoPro uses USB mini-b and this won't plug into it. I ordered one and ...
0
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1answer
64 views

Stereo Headphone Cabling (TRS) - Why 4 pads on L loudspeaker and 4 cables?

The R(ight) loudspeaker on my AKG-K99 headphones stopped working. I bought a replacement (x2) 'mini' loudspeaker. After soldered the replacement the sound was "weird". No problem. I ...
0
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6answers
388 views

Cables with different cross section having the same max allowed current?

I was looking to buy a power cable recently and my eye caught this weird fact. Look at these two cables: https://www.savio.net.pl/en/product/savio-1-8-m-schuko-m-power-cable-iec-c13-cl-138/ https://...
0
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1answer
136 views

My IC pins are too small

I bought an IC, but the little pins are too small to fit into the female end of the wire. I do not want to use a breadboard or solder the wires. Are there any solutions?
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1answer
190 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, ...
0
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0answers
37 views

Medium Voltage Cables

Concerning medium voltage cables, 12/20 kV, 50 Hz I would like to ask two questions 1)What is the difference between these two types of cables: N2XSY N2XS2Y As far I know the difference is the ...
1
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1answer
283 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 ...
0
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1answer
50 views

Current from HDMI cable [closed]

I recently purchased a cheap monitor from amazon for using with my laptop. It has a HDMI and VGA output. I also have a speaker connected to my laptop. when I connect the HDMI cable to my laptop my ...
1
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1answer
47 views

What type of wire would be "best practice" for extending stepper motor leads?

I've been using unshielded "communication and security system cable" (https://www.mcmaster.com/8280T32-8280T321/) for running cable to connect stepper motors to motor controllers. I haven't ...
0
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2answers
85 views

The meaning of cable should be wound around cylindrical ferrite

What is the purpose and meaning of a cable wound around and passed through a cylindrical ferrite, that black non-conductive ceramic metal ?
0
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1answer
189 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 ...
8
votes
4answers
1k views

Is there any benefit to using twisted pair for short-distance I2C?

I know twisted pairs are important for differential signals, which I2C is not. I also know I2C is not intended to be used over long wires. However, I made a design where I need to use a cable to ...
0
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2answers
176 views

Z-6170 USB cable

I need to make a USB communication cable for the Zebex Z-6170 barcode reader. I found a reader pin-out description but I can't understand it. It is about powering the reader from USB and pin 1 (USB ...
0
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3answers
120 views

How thick would a cable have to be for sustained current of 300A?

Background I'm daydreaming of a future where all cars are electric and wondering how actually feasible it would be. Obviously there are many challenges left for that, but for me (and millions of other ...
0
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0answers
30 views

What does pole rating and bipole rating mean for HVDC transmission cables?

I was just reading on HVDC underground cables. And according to the picture below, as they were listing out the parameters of the cables used, they mentioned pole ratings and bipole ratings. How are ...
0
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1answer
191 views

What is the type and name of this 15-pin connector pair?

This connector is suited on a Sony car stereo front panel. Searched the net however could not find anything. I love to extend the connection with a sort of cable so it possible to fit the front panel ...
0
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3answers
206 views

Cable selection and wiring for RS485 communication

I'm designing a sensor system where each sensor communicates via RS485 MODBUS in a high-density environment. Each line consists of 18 sensors which then goes to a gateway (Elfin EE11) that converts ...
0
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0answers
29 views

RF Amplifier GND/VCC Connector [duplicate]

Is there a standard connector used to connect the ground/supply pins on an RF amplifier to a power supply? For example, many RF amplifiers (also attenuators) I've seen use two pins like this: But I ...
3
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2answers
20k views

Determining how much current I can actually run through my Cat6 24AWG Cables in my confirguration?

I want to use a CAT6 (24AWG) RJ45 cable to carry a total of 2A at 48V. As per the AWG Chart, I see that the Maximum amps for power transmission is 0.577A but the <...
1
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1answer
52 views

Motor power rating and in-rush current

I'm looking to replace the cable of a mains (UK 230V nominal +10/-6) appliance, essentially just a motor, rated at 180W. The existing cable has a 3A fused plug; my options to replace it (restricted ...
0
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1answer
67 views

Water heater power cable has changed color

Couple of years ago I've installed an electric water heater in my toilet room (a model similar to this one). It's a kind of water heater that has a big tank of water with heating elements inside. ...

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