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Questions tagged [cables]

Questions about cable types, properties, ratings and construction.

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-2 votes
0 answers
47 views

What is the best antenna and cable for my project? [closed]

I am building radio controlled small submarine which includes 1 ESP32 CAM Module inside with external antenna. I would have a remote controller on my hands which also contains some microcontroller ...
1 vote
2 answers
177 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 ...
2 votes
4 answers
612 views

Why does the voltage double at the end of line in a open transmission line (physical explanation)

I'm seaching a way to explain physically what happens in a wave reflection in a transmission line, if we apply a DC voltage in a open circuit transmission line, the voltage at the doubled. I saw this ...
0 votes
1 answer
48 views

Suggest appropriate substitute for cable glands

I have a 3.3 mm cable coming from a sensor (3.3 V) and going to an instrument. I would not like any joints in the path in the form of connectors which could make problems for the sensor if the ...
0 votes
1 answer
167 views

Passing a USB2.0 connection through a GX12 Connector

In the system that I am designing, I need to connect and power a system that is placed 2 meters away from the processor. I am unable to find a good USB connector that is IP67 rated and not bulky in ...
3 votes
2 answers
171 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 ...
0 votes
2 answers
162 views

Abusing EPS connector to power LED's?

I'm working on the wiring harness for a PC build that's going to include a bunch of (5050) LED strip lights. The strips will be wired to fan connectors (more details at end). For testing, I've been ...
0 votes
1 answer
200 views

What's the Purpose of pin 44 on IDE cables

So I was looking at the pinout for 44 pin, notebook type IDE cables, and the 44th pin is listed as /TYPE : Type (0=ATA), what use does it have?
0 votes
1 answer
175 views

Laying of underground AC cables

I would like to ask, which one is the best way to lay underground low voltage (400V) AC cables, flat or triangular formation. The application that i am interested in is a photovoltaic plant. The ...
1 vote
1 answer
187 views

Data + Power connector and cable suggestion

I need to decide about how to connect two custom designed electronic units. One is main (execution) unit, and the second is hand-controller unit. Those units have to be connected by wire. The ...
4 votes
5 answers
2k views

How to wire a 13Amp UK plug for a type 2 electric vehicle charging cable?

I have a hybrid vehicle that uses a "type 2" charging cable, but the cable is too short. It plugs in to a regular 13Amp UK socket in my garage. The problem is that, in addition to the usual ...
2 votes
1 answer
61 views

How to connect heaters and RTD sensors from an EMC perspective

I have a PCB that drives an external system with simple resistance heaters and Resistance Temperature Detector (RTD) sensors for temperature readings placed close to them. The PCB includes a typical ...
1 vote
3 answers
139 views

Shield termination techniques on military-style connectors

References such as PT06A-10-6S (see image bellow) are military-style connectors. I would like to connect my cable's foil and braid shielding to the chassis ground of my connector pannel via the PT06A ...
1 vote
2 answers
1k views

Laptop webcam cabling

I am trying to convert an old webcam from an Asus laptop into an USB webcam How do i match the cables from the webcam to a standard black-red-green-white USB cable? Webcam part no. is APCB1317B2, ...
1 vote
1 answer
44 views

Choosing a durable 4 wire connection coming from the edge of a cylinder [closed]

I am making a set of electronic bagpipes, and i need to connect the PCB holding the optical sensors for the fingers to a synthesizer board through a cable of a couple of meters. For the moment i haven'...
0 votes
1 answer
77 views

What is the appropriate VCC to apply to a Schmitt trigger?

I would like to transport a SPI signal over 1 meter, at a 10 MHz clock rate, with each SPI wire twisted with a ground wire, no differential signal, 33 Ohms terminations, ESD protection with chip ...
1 vote
0 answers
45 views

Cable current ratings

Which of these current ratings is used as the standard current ratings for cable: Cyclic, Sustained or Distribution. For example; A 630mm2 Cu cable (dry XLPE type) has a "Winter SUSTAINED Current ...
1 vote
3 answers
293 views

Are there multiple bits on a data cable at the same time?

Let's say there is a copper under sea cable from New York to Lisbon with a length of 5350km. Then a signal needs approx. t = 5350km/c ≈ 19ms to arrive. Now let's imagine sending a file from New York ...
1 vote
1 answer
48 views

Cable type selection for 128 channel signal transfer [closed]

I want to use a cable to be connected (soldered) to my PCB, my PCB has 128 pads on it as follows: The signal that will be transfer to cable is @3 MHz to 6 MHZ, in range of 150 uA. The width of the ...
0 votes
1 answer
203 views

Jack for long-barrel plug

I have a DC power cable that ends in a 5.5 x 2.5 mm plug. I purchased a panel mount jack for it, and yes, the plug fits. However, the barrel is much longer than the jack, so the barrel does not fit ...
0 votes
3 answers
201 views

Can an FFC cable be fold to make a 90° angle?

I'm talking about a standard flexible FFC cable, like this one as example. I need to make a planar 90 degrees angle: the connectors are on the same PCB but rotated of a right angle. I tried with a ...
0 votes
1 answer
48 views

Mobile Power Distribution Unit: Mains Cable Size

I'm currently working on constructing a mobile power distribution unit and I need some assistance with a specific aspect of it. The unit is designed to accommodate both types of power networks found ...
0 votes
1 answer
458 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 ...
0 votes
1 answer
412 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 ...
-1 votes
1 answer
29 views

Wire size for 64 VDC starter

I volunteer for a organization that is restoring a tugboat. The starter motor cables for the main diesel engine need replaced as the insulation is no longer in good condition. The old cable had ...
0 votes
0 answers
51 views

What is the meaning of a 28k pull-up resistor in an USB A-to-C cable?

Since that debacle a few years ago, I assembled a small test harness where I plug every new A-to-C cable that I get to check for the 56k pull-up resistor between CC and Vin and toss out the ones that ...
1 vote
2 answers
68 views

Cable current rating for high frequency applications

I am looking for power cables for high-speed motors, with frequencies up to 700Hz. All the tables that I find online are referred to 50/60Hz applications. I am not able to find derating factors ...
6 votes
4 answers
1k views

Does a twisted pair cable radiate more EM radiation than non-twisted pair?

I am looking at many electronic forums and people always come up with different answers, so I would like to settle this question once and for all. Does a twisted pair cable radiate more EM radiation ...
2 votes
1 answer
77 views

My HDMI cable is outputting constant current, is that normal?

I bought two cheap monitors in a local shop. They are basically the same model, and both came with an ungrounded external power supply. After getting a few shocks from the HDMI cable I realized it is ...
0 votes
1 answer
886 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 ...
1 vote
1 answer
65 views

Can I run two motors using a shared common conductor?

Is it possible to independently run two motors using a shared common conductor? The arrangement is: there are two motors, each has an external transformer: from mains power down to 24V (I think it is ...
2 votes
1 answer
75 views

How to find connector type

I try to identify the following connector type but do not get it with https://connectorbook.com/identification.html Can you maybe give me a tip? (width auf the socket is about 8 mm, of the plug 6 mm)
2 votes
3 answers
3k views

A DIY solution for IDC cable

I need Ribbon Cable with IDC female header 8pins (2x4) on one side and separate female sockets (2.54mm pitch) on the other side. Like this cables: But I can't find appropriate cable, the available ...
1 vote
1 answer
1k views

Coaxial DC power cable for switching AC adapter required?

Recently the DC cable from my AC/DC adapter to my laptop broke. I removed the broken section and it works again. Now the cable is too short for my taste and I would like to replace it. I heard from an ...
2 votes
1 answer
2k 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 votes
1 answer
704 views

Addressable LEDs (WS2815): power and data in a multicore cable

Would it be possible to use a multi-core cable to have power and data in the same wire? I'm using WS2815 LEDs. The total current needed is 9.6A. For a cable of 8 meters, a 2.5mm wire is needed. ...
2 votes
3 answers
180 views

Why do we need to transmit in a cable with a digital modulation? Can't we just put high voltage for 1 and no voltage for 0? [closed]

We know that we can't transmit a square wave pulse via EM and we need to convert it to an analog signal via some modulation. But why can't we just put high voltage in the cable to represent bit 1 and ...
0 votes
0 answers
50 views

Dealing with IEC and NEC wiring color code in the same equipment

I am dealing with IEC and NEC standards for wiring color codes. For the first time, I have to integrate european (and UL certified) COTS products - power supplies - into a system for the US market. ...
1 vote
1 answer
341 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, ...
2 votes
2 answers
188 views

Using solder to extend RTD cable?

I have a 3 wire RTD sensor (Pt100). The leads coming off of it are not long enough to reach our temperature controller. I bought some RTD extension cable (3 wire) from the same company. Is it okay to ...
1 vote
3 answers
181 views

How do people ground cable shield on thermocouple cable?

I am building an electronic controller that measures the temperature on a metal chamber. Type K thermocouple sensors are placed on the metal chamber, and type k thermocouple extension cable connects ...
5 votes
1 answer
218 views

Conducted/Radiated emissions through 40-pin FFC cable

I have a 40 pin FFC cable that looks like this between 2 PCB's: https://www.digikey.com/en/products/detail/molex/0151660427/3281308 The problem is I'm getting radiated emissions from mostly the ...
0 votes
1 answer
53 views

Can't find a mini connector (2x5, 0.05") [closed]

I am looking for a connector as shown in the image below. I am able to find the connector itself here. But, I need cable connected to it as well. Can someone help me find this connector with cables ...
7 votes
6 answers
2k views

I2C signals over longer wires

I am planning to use an I2C sensor connected to a junction box, which is connected to a control device. The control device and junction box are connected via I2C as well (same I2C wires as for the ...
0 votes
1 answer
32 views

2 Row Ribbon Cable Connector Pin Swap

I have two different LCD displays that uses a 2 row, 16 pin connectors. For reasons unknown, one of the designs has customized the connection and implemented a pin swap that makes using an off the ...
0 votes
0 answers
40 views

Cable layout for multiple motors and encoders

I need to make a connection between 2 PCBs, the first is a controller board with microcontroller, motor drivers and other peripherals. The second is a motor/encoder board, essentially a three motor ...
4 votes
4 answers
2k views

Could RS-232 data be carried over a standard 3.5mm audio/aux cable?

I am looking at RS-232 control for various TV displays which use a different type of input connector for RS-232. The combination of RS-232 inputs on different TV displays is the standard 9-pin DB9 ...
15 votes
3 answers
15k views

How does "bidirectional" transmission on gigabit Ethernet work?

I was reading about the various twisted pair protocols, being distracted by the marvels of Wikipedia when I went to look up the way to wire a connector. And I'm wondering how it can transmit in both ...
18 votes
3 answers
9k views

What are these teardrop-shaped loops in power lines for?

I just happened to notice this along a road near where I live: So these were in a pair, oppositely facing, "tip" to "tip" of the teardrop. At first glance, this doesn't seem to be ...
0 votes
1 answer
87 views

What are these power connectors called and can I use extension cables for a footwarmer? [closed]

I'd like to know what these connectors are called, so I can locate them online and purchase extension cables. I have looked in a number of places and cannot identify them or locate cables. So if ...

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