Tagged Questions

questions about getting both the energy required to power a device, and also data in one direction or the other or both, through a single cable.

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6
votes
2answers
172 views

Observing effect of household appliances on powerline communication

I had been recently working on Powerline communication modems (PLC). I put two PLC modems at different parts of my home and observed the data transfer rate between them. However, I observed that when ...
0
votes
0answers
30 views

How much electromagnetic interference/pollution is produced by home power-line network adapters?

How much electromagnetic interference/pollution is produced by home power-line network adapters? How do they compare for example to WiFi routers? They operate on high frequencies to achieve high ...
-2
votes
1answer
101 views

Why so many capacitors in design?

I was looking the schematic for programming a standalone AVR chip. I am curious why we need so many capacitors. As far as i know, i know we need one capacitor on the power supply. I don't remember ...
1
vote
1answer
98 views

Best solution for making a LAN with 2 untwisted lines

I need to provide a best solution for establish a LAN for old train carriages in order to transfer low quality video surveillance data. Only existing lines are 2 wires untwisted throughout all ...
1
vote
0answers
61 views

Powerline modem ST7580 single channel mode

I'm trying to implement a powerline module with the ST7580 modem. There is a passive and active filter design in the application note laid out which I plan to modify according to my desired carrier ...
0
votes
1answer
89 views

How can power line devices be affected by a power supply?

I have two power line adapters plugged into mains and I've noticed that whether a cheap power supply is plugged in, the data transfer rate drops dramatically or even drops to zero. What's the theory ...
2
votes
1answer
115 views

Inductive and Capacitive couplers in power line carrier communication?

I have searched a lot in internet for getting simple circuit diagrams of Power line couplers (both inductive and capacitive) which I am supposed to explain to my students. Also our college library ...
0
votes
1answer
223 views

Cheapest communication solution including wifi bluetooth and ethernet

A few friends and I are underway designing a senior project. We are looking for ways to make our product cheaper, and of course it comes to our most expensive ic components. We haven't gotten very far ...
7
votes
1answer
314 views

Control a synchronous slave clock

I recently acquired a couple vintage simplex clocks that used to be in a high school. They were part of a clock system where a master clock controlled the whole operation of slave clocks. There were ...
-8
votes
2answers
679 views

Send a signal through the powerline [closed]

I would like to what is the easiest and cheapest way of sending a signal through a 110 volt outlet wiring to another outlet on the same phase or on a different phase. I would like to know if a light, ...
2
votes
1answer
3k views

Use power line to communicate between devices - simple communication

So I am a google programmer getting interested in hardware hacking. What I want to do: Use Arduino or a similar microcontroller to control the lighting in my house, of course for as cheap as humanly ...
2
votes
1answer
268 views

Simple data connection through powerline wires

In my home/office/business I have a 4 incoming electricity lines, (Government line, private subscription generator 1, private subscription generator 2, home gasoline generator) I want to send ...
-3
votes
2answers
90 views

How to send information over large number of client?

I have one master which needs to send information to lots of slave device ~1000 which needs to receive same information. As I need to power all of the slave device, I was thinking of using same wire ...
-3
votes
1answer
533 views

Power line communication over 220V 50Hz main line [closed]

I want to make a device to send and receive data using the main power line, and I want it to be compatible with the X10 protocol, but i have no resource on the circuit and I don't know how to inject ...
5
votes
1answer
1k views

How to couple a signal on to a DC line

I am using DPSK modulation on my signal and want to couple this onto a DC-signal. How will the hardware be set up for this? Is it enough to just couple my signal through a capacitor on to the DC-line? ...
0
votes
1answer
338 views

Can 1-wire (One-wire) sensors be used over power lines?

I'd like to sprinkle my house with 1-wire sensors (temperature - everywhere, humidity and flooding - in the basement), but the only wire in most locations is the power-socket (110V)... Can a 1-wire ...
3
votes
1answer
457 views

Coupling the powerline communication modem for 3 phase line

i recently assigned for the Powerline Communication project for transmission up to 200MBps.the problem occurred when trying to find circuit for coupling between the modem and the powerline cable.is it ...
3
votes
1answer
308 views

What are suitable transformer specs to use with LM1893 PLC modem?

I'm trying to learn about PLC (I know the risks), so I want to start with the simplest circuit specified in the LM1893 datasheet to use on 220v AC powerline. The transformer there doesn't have any ...
2
votes
3answers
717 views

Line, Neutral and Ground and another Ground

I try to make a 110VAC energy meter connected to my computer out of the CS5490 This IC measures voltage and current over a voltage divider and shunt resistor respectively and then calculates the ...
3
votes
2answers
287 views

Performance Analysis of PLC Modem

I'm an electronics and communications engineering student undertaking a project regarding the occurrence of Electromagnetic Interference (EMI) in power line communications (PLC). I would like to ...
2
votes
2answers
610 views

How to observe powerline modulated signal?

I was assigned to observe the modulated signal of a PLC modem, but I have not really started yet. How do I do this? Should I use an oscilloscope or spectrum analyzer? If so, do I just connect it to ...
5
votes
3answers
876 views

Implementing powerline communication on a battery-fed 12V line

I was wondering if anybody had any thoughts on whether it is possible to implement powerline communication on a lead-acid battery fed-12V power network. Characteristics: voltage: 12 V Fed by a ...
2
votes
3answers
389 views

Suggestion for an easy-to-use connector+cable for simple hobbyist sensor project

I'm implementing, as a hobby, a simple data logger. I previously asked a question about running a ~10m cable to the MCU for a Dallas/Maxim 1Wire sensor (and therefore 3 wires, since I'm not going to ...
2
votes
5answers
2k views

Simple power line communication circuit PLC design?

I need simple PLC power line communication design which I could transmit /receive a packet of data through two points ? Any block diagram with little details will be great for me . Update : Data ...
1
vote
5answers
837 views

Recommened chips for datacommunication over a low-voltage AC power line?

A client wants to send data (think 100 ... 10k baud) over a combined power / cable-TV coax cable, distances up to 1 km. The lower end of the spectrum (say up to a few MHz) is free, but the cable ...
3
votes
2answers
617 views

Power line communication, how to check if frequency is present

I'm trying to communicate on a power line without external filters (only a filter for the 50/60Hz), because I want to use only digital filters. My processor is a Cortex-M3 device running at 24MHz. ...
2
votes
1answer
2k views

What better options are there than the LM1893 for powerline communications?

I'm looking to build a home automation system which uses the powerline to carry the data between nodes. I have an old design based on a combination of LM1893, HC123 and 8748, but the slave board is ...
2
votes
1answer
611 views

Transmitting audio over variable voltage DC power line?

I have multiple generators that are producing a variable DC voltage between 0 and 18volts each that are being sent to an inverter for an AC output used to power various devices. I really need to be ...
3
votes
3answers
2k views

How do these powerline networking adapters work?

I have some powerline networking adapters which can transfer at a peak rate of 200 Mbps (I get around 60 Mbps typical, but I am sharing the network with many other devices and many pieces of equipment ...
4
votes
2answers
813 views

DC power line communications

I want to send a signal through the DC power lines used in railway compartments. Can you please help me to do that, or provide some documents or links?
6
votes
2answers
6k views

Power line communication principles

What are the principles of implementing Ethernet over power lines ? Is it reasonable/possible to create an Arduino shield which will provide both power & network ? (properly isolate the "dangerous ...
17
votes
11answers
9k views

Injecting a communication signal over DC power supply lines

I'd like to be able to daisy chain multiple devices using just the power supply wires and then inject a communications signal over the power lines to turn it into a half duplex network. Are there any ...