Questions tagged [cables]
Questions about cable types, properties, ratings and construction.
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1answer
61 views
Regarding Current in CAT 5e cable [duplicate]
Can we supply 2A DC current at 5V in the pair of ethernet CAT 5e cable?
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0answers
23 views
understanding of balanced/unbalanced mode
I am trying to understand a concept of an unbalanced/balanced mode in a radio frequency engineering.
In Book "Hochfrequenztechnik 1" by Otto Zinke, I found a picture of a transition from a coaxial ...
1
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3answers
60 views
Are there any traditional colours to use for the wiring in a 4 mA - 20 mA current loop?
I am designing a cable that carries a 4 - 20 mA current loop.
Considerations:
The positive lead is connected to VCC.
The negative lead is connected to a 120 Ω resistor (other end of the resistor is ...
0
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1answer
68 views
Cable identification: Euro plug to triangular shape
I recently found a cable near to a TV that didn't fit anywhere and didn't look familiar in any way. It's a Euro plug on the one end, and on the other end it's three contacts in a triangular shape, ...
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1answer
28 views
Wires coming out of a pigtail cable
There's a audio 3.5mm to pigtail cable on sell at Adafruit:
https://www.adafruit.com/product/1700
It looks like what I need as I could connect one side to an old phone, play some music and the loose ...
0
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1answer
61 views
Are these tiny connector pins standard?
I have the following connectors on a USB dongle (the ones on the left of DEBUG):
They are tiny (I put the dongle on an Arduino to show the differences with the ...
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1answer
59 views
USB C connector design and resistor placement for USB 2.0 data cable
I have a follow-up question to this one.
I have a type C connector with 8 pins. No spec, type C female counterpart reveals G, Vcc, A2, A3, A6, A7. Remaining two pins do not respond to anything. G-Vcc ...
0
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3answers
50 views
AC/DC wattage conversion
I've got some common Dutch "huishoudsnoer" (household-cable? Mainly used for powering lamps. Not solid core, 2*0.75mm² cable) laying around, that's rated for 1380 watts. Our wall sockets provide 230V ...
-1
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1answer
35 views
what determines bandwidth of a cable i.e. hdmi
I recently bought a cheap 3quid hdmi extension cable for my oculus rift. It's been causing screen tear. I know what cables are compatible now but I'm wondering what affects the bandwidth of a cable?
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1answer
50 views
Isolating a small pin on a flat cable
A motor on my HiFi system (which is supposed to lift a volume controller) has broken. The motor is stuck and I don't want to fix the mechanical part. I assume disassembling the volume controller would ...
1
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0answers
29 views
How to remove cables from the Philips ballast for fluorescent lamps? [migrated]
I have a few HF-Performer III TL5 ballasts to to which I connected cables in past. Now I can't take them out
http://www.lighting.philips.com/main/prof/lighting-electronics/fluorescent/fluorescent-...
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votes
1answer
33 views
Copper cable current Gauge calculation
I want to calculate theoretically the current carrying capacity of a cable. I have 24 Awg cable, which is having 8 strands: the overall dimension of the cable is 1.27mm and each strands dia 0.15 mm ...
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3answers
213 views
Transmit 7MHz analog signal from board to board
I want to transmit real passband analog single ended signal with bandwidth, 0 to 7.3MHz, from board to other board. distance from these board will not be more than 15cm. what's the best choice for ...
3
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2answers
58 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 ...
1
vote
1answer
52 views
“Ideal” way of using 3-conductor cable for unbalanced audio
I am intending to make some short (<30cm) unbalanced audio cables to interconnect devices on a musical instrument pedal board.
As a matter of convenience, I was thinking of using some Belden 9451 ...
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2answers
74 views
Why does curling a wire decrease its amperage/wattage? [duplicate]
I picked up an extension cord today, and I noticed that it had a different value for its wattage and its ampage, based on whether the cord is wound around its base or not.
(I apologize that the ...
0
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1answer
54 views
Replacing a broken 3.5mm audio jack with a different one, why does each cable have different amount of wires?
I found a nice speaker system that seems to work except the 3.5mm audio jack is damaged (it's missing the tip of the conductor for left channel audio). I gathered some broken audio cables with 3.5mm ...
0
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1answer
31 views
LC filter applicability for power to output cables
I am designing a circuit that has a 240MHz MCU and some cables going to sensors so I am wanting to reduce the clock noise getting onto the supply line and going out the cables by using an LC filter. ...
0
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1answer
36 views
I have a H07RN-F 3G cable which is rated at 400V/16A, can it be used for a normal 220V schuko connection without consequences?
Basically making it a 2.5mm gauge cable, will it have any negative effects on appliances that run on 220V - I am not sure if a 400V/16A rating is the max or the supposed to be used at/for rating?
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0answers
38 views
Simulating cable length during TDR testing
I am trying to create a circuit that can be used as part of a TDR simulator.
What I need to know is if it is possible for the pulse that is sent out by the TDR equipment to be delayed by a piece of ...
0
votes
1answer
82 views
How come this non-standard ethernet wiring works?
I am setting up ethernet in a friends house with cat 5 cabling. I do not do this professionally but I have made like 20 patch cables and installed about 20 wall sockets before in my own house.
My ...
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0answers
37 views
What is the difference between AUX and STEREO cable?
Does the AUX cable use TRRS jacks and the Stereo cable use TRS jacks?
Does the AUX cable have more wires than the Stereo cable?
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1answer
83 views
Can we use ethernet cable instead of coaxial cable without adaptors.?
I am a mechanical engineer. Trying to build a computer vision system using endoscopic camera. I have a camera with 4 pin input, 2 input pins for power supply of 5 volt and 2 input pins for video ...
0
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2answers
762 views
Ribbon Cable Disconnected
I am having trouble figuring out how to reconnect this ribbon cable*. My dear removed it when he was trying to fix our projector and cannot figure out how it went in. There doesn’t seem to be a way ...
0
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1answer
28 views
AC Power Splitter and Regulator
Is there a charging cable which splits into two?
One of the split cable will have DC 12v 3a with a male coaxial 5.5mm x 9.5mm
The other split cable will have DC 5v 3a with a USB Micro.
Does this ...
0
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1answer
46 views
Any suggestions to solve shielded jumpers between different PCBs? [closed]
I've a problem where I got one PCB and then another and I need to get some small power, ground and signals from the other PCB to the other one.
The power and signals will also need shielding and good ...
38
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10answers
12k views
Can a premium HDMI cable outperform a standard cable?
Assuming two cables both conform to the same standards (e.g. HDMI2.0, high-speed, ...) is it possible that a premium cable will outperform a standard cable when using an objective benchmark that ...
1
vote
1answer
112 views
Why do USB data cables have 5 wires, what is the use of shielding wire?
I have always been curious about the 5th wire(aka shield wire) in USB cables. What is its purpose? Does it anyhow affect charging speed for mobiles or data transfer?
I do know that it carries the ...
1
vote
1answer
96 views
Locating pairs on an LVDS cable
For a 2-row connector intended to interface a cable to a PCB, which method is preferable for twisted pair LVDS signals?
Horizontal Pairs:
LVDS1- LVDS1+ ...
4
votes
3answers
3k views
Bad effects of coiling electrical cables [duplicate]
I have a desktop computer and a lot of external hard disk cases. I coiled all cables to make them organized and easy to clean. But an electrician told me; if you are using a cable, coiling (wrapping) ...
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2answers
78 views
How to avoid melting a 3D Printed Chandelier with LEDS and DC Voltage Drop Across 7m Cable Run of 100A 12v DC
I am trying to power led strips located inside a custom designed 3D printed chandelier.
I want to find the best solution to power the project and to work out the voltage drop along the cable from the ...
0
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1answer
42 views
Does a 3rd-Party Cable cause any harm when charging your Phone with the original Power Brick? [closed]
When using the original Power Brick the Smartphone came with to charge it, does a 3rd-Party cable cause any harm to the device or is there no difference to using the original cable?
4
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5answers
1k views
Running baseband analog audio signal over cat 5 cable [closed]
What will happen to a single ended (not differential) 1Vpp analog audio signal(4khz bandwidth, not modulated) if it runs through long cat5 cable (length can be 50 meters)? How much signal voltage can ...
0
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2answers
49 views
Why does a End-Of-Line Voltage Drop Calc yield a different result than a Point-To-Point Calculation?
I can't grasp the concept on why these two different voltage drop calculations yield different results. They should both arrive at the same answer.
In our intro EE classes when we were doing any ...
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1answer
57 views
Removing pins/wires on cables (IDE)
Can i physically remove the pin/wire 23 (DIOW --> Write Strobe) for an "IDE read only cable/effect"?
I heard that some hardware write blockers cutting physically the write line, but i have no ...
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1answer
69 views
What type of 4-pin 1mm-pitch clippy connector is this?
I have recently bought a lidar sensor with a peculiar cable type. I cannot identify it, but it has some interesting characteristics. It has a pitch of 1mm, and each pin has at most a 0.5mm width. The ...
0
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2answers
64 views
Problems extending a 12V power lead to an RGB-LED strip
I need advise on the following problem: I am connecting a 5 metres WS2812B based RGB-LED strip to an extension cord. This is a 12V version, where two LEDs are coupled in terms of their addressing and ...
1
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1answer
107 views
Non-coaxial 50 ohm cable for LVDS
I'm looking to configure a Xilinx Zynq-7000 custom board with LVDS receivers according to the following diagram.
In my setup, the 'IOB' on the left represents an LVDS driver from a radar receiver and ...
0
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0answers
70 views
Reverse Continuity Testing
I am interested in testing some low voltage cables for their quality. For example, USB, audio and Ethernet cables.
Testing continuity is simple, but I want to know if these cables may momentarily ...
0
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2answers
95 views
Strange IEC C5 cable with 2-pin wall connector
I have this cable pictured below. It's an IEC C5 "mickey mouse" cable. What's very strange is that the wall connector should be 3-pin, with an earth, whereas this cable has a 2-pin wall connector.
...
3
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6answers
384 views
What's the rationale behind these warnings about extension cords?
(Disclaimer: I've read the help center and I do understand that this is bordering on off-topic since it's about consumer devices. However I hope that I've managed to make enough on-topic by asking ...
0
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1answer
63 views
Sourcing High Conductor Count Cable
I need to run approximately 25 feet (8m) of cabling up to a project box containing an array of ultrasonic sensors. (note, I was not in charge of the design of this project, if it had been up to be I'd ...
1
vote
3answers
265 views
Reversing USB power polarity, but no black wire
My goal is to create a USB-to-USB cable with reversed polarity in order to charge an old Gameboy Advanced SP. I could just go on Amazon and buy a charging cable, but I do enjoy a fun little project ...
0
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7answers
138 views
How to strip pieces of insulation in a wire?
I would like to strip some insulation from a wire (like shown in the image below, the green area should be only the metal inside, no insulation). I was wondering how I could possibly do this. Cutting ...
12
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6answers
4k views
What makes a high speed USB cable high speed?
I was shopping around for USB 2.0 cables.
Some manufacturers claim their cables are "high speed".
My understanding is that the electronics on the device determine the speed, not the cable.
I ...
0
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1answer
76 views
Compatibility of an LCD module and a connector
I want to realize i2c communication myself using Raspberry Pi and a LCD module.
I am reading documentations to find an appropriate connector but I am a bit confused and I need help.
Here is the LCD ...
0
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2answers
111 views
How reliable is using couplers to extend Ethernet cables?
I want to obtain one 90 meters of Ethernet CAT6 cable(with RJ45 connectors) by using three 30 meters of CAT6 cables with RJ45 connectors. The only option I could find is to use three such couplers.
...
0
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2answers
134 views
How does “bidirectional” transmission on gigabit ethernet work 2?
I was looking for an answer to the question how the 1000BASE-T transmission works and I came up with this post How does "bidirectional" transmission on gigabit ethernet work? but still a few ...
1
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1answer
101 views
What type of headphone connector is this? [closed]
I got a pair of Onkyo headphones as a gift a while ago, and now one of the connectors on the cable broke (the red one in the picture).
What type of cable connector is this? Searching the Onkyo ...
-1
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1answer
100 views
Why is audio jack coaxial (round) [closed]
Why is audio jack in coaxial (round) shape?
I remember there were earphone plugs in the shape of miniusb (not exactly, but close to that) on some old phones and the audio worked just fine.
Wouldn't ...
