Questions about cable types, properties, ratings and construction.
16
votes
5answers
2k views
What's the best cable to transfer audio signal?
Sorry if this is the wrong place but I'm interested in a scientific and electrical explanation and not some HiFi voodoo magic.
I guess you all have seen the discussions about expensive audio cables ...
12
votes
3answers
1k views
Just chopped a cable, is red power, black ground?
I've just chopped a usb to micro-b usb cable.
There are 4 small wires inside
Red
Black
White
Green
Isn't it universal that Red is power and black is ground?
3
votes
2answers
321 views
Recommend a Serial to USB cable/converter that works with modern OSes
I'm hacking on a board that has an RS232 interface (via a Max232 chip). My new computer doesn't have a serial port, which leaves me using USB. I actually have a Serial to USB cord already, but it ...
2
votes
3answers
876 views
Questions about wires in a DB9 cable
I stripped a DB9 extension cable which I will use to connect to a DB9 connector on one end and an RJ45 on another. I need to make connections to pin 2, 3, and 5 on the DB9 side.
When I stripped the ...
9
votes
3answers
142 views
Communication among briefcase halves
I'm building a small laptop-ish device in a briefcase. Imagine the green wires aren't there. The LCD half lies somewhat deeper in its case than the keyboard part.
For now, testing and programming, ...
2
votes
2answers
2k views
Which is the best, clean way to join wire together
I am installing CCTV cameras and I'm using a 3A adapter to supply power to the cameras, but I have very messy results when trying to join together very small wires with electrical tape.
Is there any ...
6
votes
1answer
182 views
What is the most common type of high voltage cables?
I'm building the model of an admittance matrix for the German Grid, most specifically the Transmission grid. I only have characteristics of cables as number of cables, wires and voltage (I'm working ...
3
votes
2answers
183 views
cable jacket melts
I am new to hardware.
My breadboard just arrived and I am trying to light up my LED. I used computer power supply for power (red wire for + black for -) and used strands of LAN cable for connect LED ...
2
votes
1answer
156 views
Protected USB connectors?
Do USB connectors come in protected versions suitable for damp, vibration prone environments? If so, what terms should I use when searching for them?
If not, what are my options for meeting the USB ...
1
vote
1answer
95 views
I2C on FFC or IDE cable - interference?
This is a follow-up question on this answer. I need to communicate with I2C over approximately 10cm and I'd like to use an FFC or IDE cable for that.
Earlier, I used an FFC cable to link a segment ...
1
vote
4answers
474 views
Any truth behind “multipole” technology in audio signal transmission?
After reading this question about ultra-expensive audio cables, I was reminded of a product that we sold at a company I used to work for.
MIT Cables makes these "audio interfaces" which go a step ...
0
votes
1answer
993 views
How to calculate voltage drop over and power loss in wires
How do I calculate the voltage drop over wires given a supply voltage and a current? How do I anticipate on voltage drop so that the final load has the correct supply voltage?
What will be the power ...
0
votes
1answer
199 views
Connect SMA to a regular pin/wire
I have an RF signal (5ns pulses every 200ns) coming out from a SMA connector on FPGA board (Spartan 3E Starter Kit). I want to send this signal back to the FPGA using one of the on-board pins.
So, I ...
