Questions about cable types, properties, ratings and construction.

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0
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1answer
22 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
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1answer
35 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
votes
1answer
73 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
votes
1answer
35 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
votes
2answers
46 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.
-1
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1answer
68 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? ...
0
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0answers
16 views

SCSI termination with external device (removing internal one) [migrated]

I have SCSI adapter Adaptec ASC-29320ALP U320 (rev 10): http://download.adaptec.com/pdfs/installation_guides/29320alp_ig.pdf For years I have been using with internal LTO-2 tape drive with a ...
-3
votes
0answers
41 views

Maximum voltage through a connector with magnets [closed]

I have two questions about the implementation of magnets with electricity. What is the maximum allowed voltage through this method ( see pictures ) That way isolate the positive and the negative in ...
0
votes
2answers
51 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. ...
-1
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0answers
15 views

SCSI-II to SCSI-III (and viceversa) compatibility [migrated]

I need to connect a MezIO-D220 card to an external device, but I'm not sure about the compatibility of SCSI connections. The card has a SCSI-II 68 pins female port, but I cannot find any SCSI-II 68 ...
-3
votes
2answers
61 views

How to extend a pair of RCA cable and not lose too much audio quality at the same time? [closed]

I have a 2.1 speaker system that I have been using for over 6-7 years or so. Recently I have decided to mount the two satellites on the wall, but there is a problem with the length of cables. I have ...
0
votes
2answers
43 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 ...
0
votes
0answers
6 views

Alternatives to the V35 interface [migrated]

I am trying to find an alternative for the legacy cables I am using. I currently have a Cisco router connected to a DL 600 E (Multiplexer). On the Cisco router there is a serial port. On the ...
-2
votes
1answer
33 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
0answers
17 views

cable sections: peak current table

I need to build a coil for a capacitor discharge coil magnetizer The discharge reaches ~2kA 200us peaks , but I wasn't able to find a peak current table. Is there a table/formula for such case?
0
votes
2answers
97 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
votes
1answer
73 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 ...
0
votes
2answers
63 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 ...
-1
votes
1answer
45 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
votes
1answer
77 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. ...
0
votes
1answer
57 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
345 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 ...
-1
votes
1answer
72 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
55 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
votes
1answer
98 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
votes
1answer
34 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 ...
1
vote
2answers
69 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.
0
votes
3answers
167 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 ...
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
51 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
votes
1answer
114 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
votes
1answer
56 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
912 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
votes
2answers
38 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
vote
1answer
81 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 ...
0
votes
3answers
78 views

How would I design a cable line that doesn't leak heat to the ground surface?

A loaded underground power cable dissipates some power as heat which heats the surroundings. The following scenario is possible in regions where large amounts of snow accumulate on the ground during ...
3
votes
2answers
102 views

Downsides of using a Heavy Guage wire with Low Amperage?

I understand that different gauges are available for different amperages. Is there any downside to using a cable that is able to support a high amperage, for a low amperage?
1
vote
2answers
200 views

Color-coded 50 Ohm BNCs

I would like to use some color coding in our experimental rig (microscope). All BNC cables so far are black 50 Ohm, and I'd like to use some yellow, red or any other very-not-black colors. I can't ...
1
vote
2answers
129 views

I need to transmit 100khz /90khz FSk at 9600 baud over 4km

What cable characteristics should I look for when designing a copper (or other) conductor cable for transmitting FSK @ 100kHz/90khz, 3V pp in order to achieve a maximum attenuation of not more than ...
0
votes
1answer
60 views

Re-attaching A Cable To A Circuitboard [closed]

I have a drone, but one of the cables connecting the battery to the circuit detached and I took it apart so I could have better acces to the circuit board. I know where the cable goes but my problem ...
7
votes
2answers
785 views

How does a coaxial aerial cable work?

My family and I managed to break the aerial cable of our TV a few days ago. The cable is of this kind of design: And I believe its called a coaxial cable. Fortunately, someone more practical than ...
-2
votes
1answer
41 views

Data speed (fps) significantly decreased on USB camera [closed]

I have a 5 meter long inspection camera bought on ebay (here), getting 30 fps @ 640x480. I was measuring the resistance between D+ and D- while connected (DP, DM in the actual image), just for fun, ...
0
votes
5answers
615 views

How much power can a 20AWG USB cable safely handle?

I recently got a device that uses a USB cable (USB on one end and a power connector on the other end) as a charge cable. The device draws 16.5V, 3.65A Max. I want to extend the charge cable by using ...
0
votes
4answers
135 views

JTAG connector - large pitch to smaller one

I have a Segger's Jlink EDU probe which I used for debugging and programming various ARM based MCU's. But now I have to work with this LPC4088 QS board which has a smaller pitch 20-pin JTAG connector ...
1
vote
2answers
262 views

How to determine length of coax to get a certain delay?

This is a follow-up to How to make a phase shifter?, it seems one answer is to simply have different lengths of coax going to each antenna. However, how do I calculate the difference in length given ...
0
votes
1answer
42 views

Throughput and speed of data transmission cables [duplicate]

What are throughput and speed limiting factors in an ethernet or any other type of cable which is used for data transmission?
1
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1answer
214 views

How to make UART-UART cable

I am software developer and I need to make cable to connect this http://lib.chipdip.ru/036/DOC001036112.pdf usb adapter (which I connect to USB port of my PC) to UART port of my A13 Olinuxino. As I ...
0
votes
2answers
76 views

Using 3.5 mm cable to connect load cells?

I have some 300 lbs. 4-wire load cells that I need to connect to a PCB. Their nominal resistance is 350 Ω, and they will be excited at 3.3 V. The goal is to read the force on a PSoC microcontroller. ...
0
votes
1answer
91 views

How do I repair these wires? [closed]

In the past I have occasionally repaired broken wires in various electronics around the home. However when trying to repair this cable for a Logitech USB headset, I discovered the wires are different ...