Questions about cable types, properties, ratings and construction.

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1answer
80 views

Wiring a Key Switch to Control USB Power?

So I'm working on a project, and I'm a bit stumped on this problem I ran into. Brief explanation, I have wired a key switch into the power pin of a USB extension cable, which will allow the female end ...
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2answers
57 views

Line or Low or High Voltage Twisted Cable?

I understand that telecommunication cables are often twisted to cancel out electromagnetic interference (EMI) from external sources, e.g., crosstalk. Are power cables ever twisted and if so, why?
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2answers
40 views

cable length drops

I am trying to send power from a system to a load that is almost 200 meters aways. Now, the supply from the battery is approx 70V or so. At the load end the voltage received is 55V. Now, I understand ...
1
vote
1answer
57 views

Connecting LED strip with long cable (10 metres)

I'm working on a Christmas light display that will feature addressable LED strips on my front lawn. My LED strips operate at 12V (using the UCS1903 chipsetUCS1903 chipset). The issue is, I need to ...
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3answers
105 views

What do you call a cable that has string along with its conductors?

I'm trying to replace the cable that connects the magic wand in a VTech Magic Wand toy laptop. It's an interesting beast. Inside its outer insulator is a bunch of strands of string plus the two ...
4
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2answers
73 views

Trying to identify a connector

I have a car equipment with a cable that should be plugged into a cigarette lighter (12v). I'd like to tweak a bit, and connect it at home to a standard 12V power supply. However, I can't figure if ...
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4answers
105 views

Does USB cable quality matters (affects in someway the signal) on audio interface (or DAC)?

I was wondering this for quite a while. Usb cables are purely digital signal so in theory no one should care about its quality if it does the job well and transfer the signal to the end (ones and ...
3
votes
1answer
53 views

What punch down tool should I use on this ethernet jack?

As you can tell this does not have the vertical lines like a regular keystone jack. So i was wondering what punch down tool should i use? ...also what are these called?
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1answer
66 views

How to test insulation of an unarmored, buried cable with mega-ohmmeter?

I have 3 single 1000V rated cables that have no armor and there is no ground reference (they are in a trench in the middle of the field). Usually I do phase to phase and phase to ground for each ...
0
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0answers
36 views

Coaxial Cables: RG6 or RG6 Low Loss?

I have a 50 foot zBoost RG6 low loss coaxial cable and it's not long enough for what I need. I need a 100 feet of cable (that will work outdoors) and I'm stuck between a rock and a hard place in ...
3
votes
1answer
74 views

Is it possible to measure TDR without a specialized device?

I've seen dedicated devices for measuring TDR and even layer 2&3 network switches with the TDR capability. My question is what would prevent a standard home router from being programmed to measure ...
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1answer
74 views

How to connect wire to a male JST connector?

I have an EL panel with wire I want to connect to my Arduino shield (Escudo Dos), but the shield has a male JST (PH) connector, so there are protruding elements from both sides. What component do I ...
1
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1answer
107 views

Replace vintage speaker connection by modern one

So, I have a vintage Pioneer hi-fi installation and I want to use it in a recording studio. It features two passive speakers and one amplifier. My problem is that the speakers need to be connected to ...
5
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2answers
120 views

Best practices in making cable schematics

I would like to make cable schematics for manufacturing that would include: cable lengths connectors pins conduit length heat shrink tube length and have a BOM for that automatically generated in ...
6
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8answers
1k views

How to provide power to a rotating circuit? [duplicate]

I want to build something with my unused fan. I am planning to put a lighting circuit using LEDs and a microcontroller (ATmega, Arduino Nano, or something), thus creating some kind of image from the ...
1
vote
2answers
59 views

Extend flat cable between LCD panel and driver board

Given a setup similar to this: https://www.adafruit.com/products/2395 The panel itself is nicely thin, but the driver board takes up some space. So I need to put it somewhere separate from the display....
1
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1answer
47 views

What are the different possibilities for delay distortion in fibre optic cabling?

Fibre optic cabling is often known for its extremely high speeds but is there anything that may develop delay issues in transmission via fibre optic cabling?
5
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5answers
702 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?
0
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0answers
13 views

Distributed and lumped line parameters model

When modeling HVDC cable in an MTDC when using lumped line parmeters model it is working ok but in case of fault there are very high frequencies in the faulted section. However, reducing the line ...
0
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1answer
50 views

What is a “reference conductor”?

I am working with a twisted cable model. Therefore I have: 2 input pins 2 output pins But I also have a fifth input/output call "reference conductor". Based on the notation, it seems to be an ...
2
votes
3answers
58 views

Sizing battery cables

I'm confused about the sizing of the battery cables for a UPS system, When the battery is discharging the voltage decrease and current increase to a maximum value (which depend on the end of discharge ...
0
votes
1answer
45 views

Connecting an auxiliary cable into three out of 9 serial pins

Please bear with me as I have no electrical engineering knowledge at all. I have a device with the following connection (and connecting cable): which as far as I understand is called an SRT ...
0
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1answer
78 views

Trying to understand coaxial cables

Im trying to understand exactly how a signal from a coaxial cable is interpreted. From my understanding based on disscussing with class mates and a couple of hours in a school laboratory my best guess ...
0
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1answer
75 views

Maximum cable length between Raspberry and a 5V WS2812 led strip

I have a 2 meters WS2812 ledstrip connected to my raspberry and it works fine. Does anyone knows what the maximum length can be between the raspberry and the start of the led strip? I tried a 5 meters ...
0
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2answers
47 views

What can be a good modelisation for an open wire?

How to modelise an open wire for a simulation purpose? I think that it is more complicated than it sounds.
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1answer
70 views

Need advice on what the following port could be?

I've tried searching for different USB port types to identify what this port might be but to no avail. The mini USB cable fits in here however all the pins don't match up. Any idea what it could be?
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2answers
56 views

Copper cable diameter for large current device

I am looking to install a 12V DC bow thruster in a boat. The device draws up to 500A but is only used on and off for a few seconds at a time. I have an 800AH 12V battery stack but it's 8 metres away. ...
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2answers
51 views

Identify Connector on Clearpath Husky

can you please help me identify this connector? It is used on the Clearpath Husky to connect the battery to the robot. The top image shows the male (from the charger) and the bottom one the connector ...
9
votes
5answers
1k views

Why don't we use 7075 aluminum Ethernet and USB cables?

Since the skin depth of copper at 1Ghz is about 2.3 micrometers, it doesn't seem like aluminum would provide a worse signal to noise ratio. 7075 aluminum is also much more resilient and stronger than ...
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votes
1answer
36 views

Solder multiple microphone cables [closed]

so I want to build a program that is going to turn on specific microphones through out the building. But that is not the problem, the problem is that I obviously need multiple microphones to place ...
0
votes
2answers
125 views

5-pin DIN socket advertised as MIDI, not the same as on my MIDI gear

I bought a 180-degree 5-pin DIN chassis-mount socket dirt-cheap for a project, but I saw that it looks quite different from the MIDI outs on my MIDI gear; I did some research but couldn't find any ...
0
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1answer
101 views

US wire color coding clarification

I was buying a AC powered RV/Marine cord reel from outside USA. The cord has 2 lines, 1 neutral and 1 ground. The colors of the cores in the cord are red, yellow, blue and green. I need to use this ...
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2answers
76 views

Max length of extension cord for a 5kW load on 240?

So we have a 5kW generator for our film set. We need to get it as far away from the set as possible. As well as leave the option for 25m consumer extension cord for lights and haze machines. So what ...
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1answer
55 views

In Fiber Optic Telephone line, how light signals are converted to the voice signals? [closed]

I have been learning how internet data travels in different kind of Broadband access. In case of telephone broadband, voice signals travels through the telephone line. At the user premise, the modem ...
0
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1answer
98 views

Current carrying capability of 30AWG

I want to find the amount of current that can be carried by a wire. The first step is checking out the AWG rating of the wire. It states 30AWG. Now, I checked out the table from this link - AWG link. ...
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1answer
61 views

Make a wire thicker will work to avoid overheat?

I'm new to this community and it's a pleasure to start rolling in it! I have a simple question in regards to wire overheat that I hope you guys help me to solve, any help is deeply appreciated =) I ...
2
votes
1answer
378 views

Using Ethernet cables cable for sensor wiring

I'm exploring the pitfalls of using an Ethernet cable for extending sensor cabling. The term Ethernet cable is used ambiguously on purpose to denote an "easily available 8-wire cable whose category ...
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1answer
82 views

How to properly connect an old record player output (spade connector, possibly amplified) to an RCA tape deck with built in amplifier? [closed]

I have an old magnavox record console which for some reason the speakers don't seem to get very loud. Tracing the components, I think I can bypass those built in speakers completely and have the ...
0
votes
1answer
58 views

How do I keep a square wave output voltage high for a TTL application?

I am passing an AC signal (24 Vrms at 1K Hz) down a line through a diode of unknown bias. Due to uncontrollable variables in the environment, there are 4 possible outcomes: Positively Rectified -> ...
0
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1answer
111 views

Why are there uninsulated strands of wire in this sensor cable?

This is the cable coming from an SCT-013 current transformer current sensor. I don't understand the purpose of the bare wire strands that I have twisted and bent away from the rest of the two wires (...
0
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1answer
35 views

Pluggable Cable for multiple analog connections

I have a device which comes in two parts; a microcontroller sits in one part; both parts have a matrix of wires; accordingly, I need to cycle power through several cables while reading the current/...
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2answers
70 views

Does anyone know the name of this connector?

I have a device that is power by this cable. Now the cable became faulty and I want to replace it. Does anyone know its name? It looks like a 2-pin LED connector, but it is sightly different.
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3answers
244 views

How to choose proper size of high power DC cable connections

I can't understand how to properly calculate AWG of a cable working in DC at high current: I found several tables for AC, but I don't know if/how they can be applied to DC. My system is rated 70V/...
6
votes
2answers
1k views

Does skin effect appear in home wires?

A technician said: Its better to use a solid cables for homes (not stranded cables). I did not use any calculations but I think that stranded cables are better due to skin effect. We use 220V / 50Hz. ...
2
votes
2answers
57 views

Making a TS cable with a 3-conductor wire

I want to make a guitar cable (standard 1/4 inch TS - tip-sleeve plugs). I have the appropriate plugs, but a 3-conductor (two leads and sleeve) wire. So I need to leave one conductor unused. What is ...
0
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1answer
195 views

USB Charge and data separate cables

Is it possible to split micro USB to USB cable so two cables (data + and data -) go to the PC with USB and two other power cables go to power brick?
0
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1answer
58 views

Need to identify this cable

I recently bought this product from Amazon, but need to get a splitter for the 20V output. I need to know what to look for though, and cannot identify what kind of cable this is / what to search for. ...
8
votes
3answers
922 views

Can I accidentally create a coil with a bunch of isolated cables?

I just finished rearranging furniture in my room and I ended up with a lot of cables next to each other, some of them powering electronics that draw a few hundred watts. Is it any risky - for example, ...
0
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2answers
39 views

Increasing loss of cables to attain dynamic range

RF newbie here. Trying to learn about cables and losses and how they contribute to dynamic range. I'm creating a shielding effectiveness system for enclosures with a 120dB dynamic range using signal ...
1
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1answer
93 views

Joining power supply cables

Suppose I have a power supply with 2x12V cables. The 12V has been split into 2 inside the power supply. What happens if I join these power lines together in parallel, from an electrical properties ...