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Questions tagged [cables]

Questions about cable types, properties, ratings and construction.

-1 votes
0 answers
44 views

What is the best antenna and cable for my project?

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 ...
DoctorThumb's user avatar
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 ...
Bruno Pimenta's user avatar
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 ...
Iskander's user avatar
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 ...
irag10's user avatar
  • 71
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 ...
Tommy95's user avatar
  • 179
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'...
max22-'s user avatar
  • 11
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 ...
Tommy95's user avatar
  • 179
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 ...
Chukwuma Collins Ezenyinwa's user avatar
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 ...
Andromeda's user avatar
  • 511
0 votes
3 answers
200 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 ...
Mark's user avatar
  • 1,235
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 ...
TTransrecord's user avatar
-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 ...
Todd Stricker's user avatar
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 ...
darthstark's user avatar
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 ...
Alessandro's user avatar
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 ...
Ariel's user avatar
  • 23

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