Questions tagged [cables]
Questions about cable types, properties, ratings and construction.
0
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1answer
35 views
Reverse Engineer DIN 5-pin connector
Summary
I have a digitial guitar amplifier that can be controlled via a footswitch. The footswitch is connected to the amplifier via a DIN 5-pin cable. I want to be able to control the amplifier with ...
9
votes
6answers
3k views
Is it necessary to separate DC power cables and data cables?
I have had this discussion with my colleague earlier. A DC power supply is non-alternating, so the magnetic field a DC power wire generates is constant (is it?). Now, I know the rule is to separate ...
0
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0answers
27 views
jerky USB keyboard signal
I have made this contraption in order to quickly switch one keyboard between a PC and a laptop:
The keyboard hooks into USB_A and it gets routed to either J1 or J2 depending on the position of a 3PDT ...
0
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0answers
41 views
Wifi coaxial cable type unknown
Quick question, I was unable to identify the coaxial cable type used in wifi devices(routers ,tablets,etc.) , very thin grey cable approximately 1mm in outer diameter, I need to know the type so I can ...
1
vote
2answers
100 views
Is it bad practice to connect wires of vastly different gauges?
I would like to connect an Anderson plug with 25mm² cable to a 12V AGM battery so that I can easily connect and disconnect different devices which will conduct currents of varying amperage. I may ...
2
votes
1answer
101 views
Strongest electrical wire at AWG 24
Is there any ultra strong electrical wire at about AWG24 (0.22mm)? I want something that would be strong as a steel wire rope but also with low resistance that can used as electrical wire.
0
votes
1answer
64 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 ...
0
votes
3answers
46 views
RS422 Full-Duplex Cable Shielding
I need to interface two PCBs via RS422 (250kbps) in full-duplex mode (4-wire, 2-twisted pairs 100ft cable). This system will operate in a noisy (CNC) industrial environment, ie, industrial controls ...
0
votes
1answer
65 views
Why does RCA Splitter add noise in output
I have used an RCA splitter (one female input split to two female outputs) to split the Set Top Box (STB) (Satellite TV) output. One goes to TV while other goes to AV capture card on my PC. With this ...
1
vote
2answers
41 views
Terminology for flexible cabling on moving loads
Words are escaping me - literally.
What do you call a bundle or loop or coil of power/control cabling that connects to an apparatus which moves, pivots, or telescopes during operation where the ...
0
votes
2answers
65 views
Can I combine and re-split 2 coaxial cables for 2 signals in my home? [closed]
I have an existing coaxial cable running to my modem through the wall outside from my ISP. I bought an external digital antenna that I'd also like to run outside, but I don't want to drill a second ...
0
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0answers
23 views
Cable Parameters from Specs Data
From a 2019 specsheet for a i.e. Belden 1583A cable, I can read \$Z_0=100 \pm15 \Omega \$ for \$f=1 \text{MHz}\$, \$\text{VF}=0.7\$, \$\text{R}=93.8 \Omega/\text{km} \$, among maximum Delay, ...
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votes
1answer
52 views
Is it possible to use the same RJ-45 connector?
Given that the wires are connected to the pins and crimped with a crimp tool; is it possible to "un-crimp" the wires such that they can be unattached from the RJ-45 connector? Whereafter the connector ...
0
votes
1answer
49 views
Extend smartphone camera outside the device
For a project, I would like to move the camera of a smartphone (Honor 7 in my case) ouside of the device by an extension of some sort.
I have determined that the connectors have a pitch of 0.4mm. The ...
0
votes
2answers
73 views
Avoiding DC voltage drop for surveillance cameras over long distances
Trying to power 2 HD-TVI cameras 800 ft away from my home office.
The wall mounted adapter provides 12v DC at 1 amp. I am looking for a good solution at the lowest possible cost.
There are ...
3
votes
1answer
57 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 ...
1
vote
3answers
51 views
Is it correct to say that a smartphone cable is only a “1A” cable?
A store owner said that some lower quality smartphone charging cables are only "1A cables", so if you want 2A, those cables won't do the job.
Is it correct to say a cable is only 1A? Does the metal ...
0
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1answer
70 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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3answers
71 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
votes
1answer
72 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, ...
0
votes
1answer
32 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
votes
1answer
65 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 ...
0
votes
1answer
81 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
votes
3answers
64 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 ...
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1answer
38 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?
0
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1answer
53 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 ...
0
votes
1answer
36 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 ...
2
votes
3answers
218 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
votes
2answers
71 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
63 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 ...
0
votes
2answers
79 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
74 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
votes
1answer
39 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
votes
1answer
37 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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vote
0answers
40 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
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1answer
93 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 ...
0
votes
1answer
135 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
772 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
30 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
votes
1answer
47 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
votes
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
235 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
117 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
80 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
votes
1answer
49 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
votes
5answers
2k 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
votes
2answers
58 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 ...
0
votes
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 ...
0
votes
1answer
77 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 ...
