Questions tagged [network]
The network tag has no usage guidance.
185
questions
0
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2answers
101 views
-3
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1answer
64 views
Please help reduce the following circuit to an equivalent circuit with single resistor and source
Please help reduce the following circuit to an equivalent form as I am unable to understand the given solution in the book. If required I will share the solution later.
Thanks in advance.
@jonk, @...
3
votes
1answer
38 views
How many nrf24l01+ can be transfer data between themself in one pipe
My IOT project has ten or more nrf24l01+ modules which They're going to get orders from one nrf24l01+ module and then get back response to that one nrf24l01+.
Can i do it in one pipe?
-2
votes
1answer
38 views
Output Impedance with Series Diode
Can someone explain how do i find the output impedance of the given cct?
The typical method involves attaching a voltage source at the output and shorting all independent voltage source (and open cct ...
0
votes
1answer
42 views
What's the purpose of the T568A/B's color wires?
I know that pair 3 in T568A is used for transmitting data while pair 2 is used for receiving data. In T568B the logic is reverse, meaning pair 2 is for Tx and pair 3 is for Rx.
What's the purpose of ...
-1
votes
2answers
83 views
Is there so much of a 'technological quantum leap' in 5G technology? [closed]
AFAIK, it is only the antenna hardware that goes into the smartphone/tablet and also the base-stations, where the technological breakthroughs can realistically be present. Every other component of the ...
0
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0answers
23 views
Problem on connecting XBee module with Sengled classic Bulb over Zigbee network
I am using XBee S2C module and configured as Zigbee coordinator with Zigbee stack profile set to Zigbee-pro and I am trying to discover and control Sengled Zigbee based smart bulb.
Using XCTU ...
0
votes
0answers
19 views
How to convert T matrix to Z matrix in two port network?
How can I transform a T matrix to become a Z matrix for a two-port network?
I found the following conversion to get the T matrix from Z matrix from here :
https://www.tutorialspoint.com/...
0
votes
0answers
28 views
Rx's permanently enabled in IEEE 802.15.4 wireless sensor network
I am using atmel avr2025 to make a peer to peer wireless sensor network. I am fine setting up a star network but have problems when we want to send data to nodes not being the PAN coordinator but ...
0
votes
3answers
143 views
Difference between 5G vs 4G in terms of energy consumption
I want to build a device that is expected to consume very little energy.
I don't know if it will be better to have it compatible with 5G or just leave to be compatible with 4G.
So, do the 5G consume ...
6
votes
2answers
126 views
Detect if a CAN node is transmitting or receiving
I am not an electrical engineer or EE student; I'm a diagnostic technician. AFAIK, a CAN transceiver receives bits by measuring voltage between the network and its ground/low reference (high ...
2
votes
4answers
152 views
Does a poor mobile network signal cause faster battery drain? [closed]
Quite a simple question actually, does a poor mobile network signal cause faster battery drain?
If so, is there a difference between 2g/3g/4g/5g in the speed at which the battery drains.
0
votes
1answer
63 views
Can I extend a single twisted pair DSL line using a coaxial cable?
I'm in the process of setting up a DSL modem/wifi router, which should be connected to a phone line that uses a single twisted pair. However, the phone line enters my house in a slightly inconvenient ...
1
vote
1answer
43 views
How to avoid duplicate messages in a mesh network of mcus
I'm working on a project, where each pcb has a connector on every side, so you can connect these board in a grid. It's basically a mesh network of modules.
These modules need to communicate with each ...
1
vote
0answers
58 views
PHY Link only establishing 10 Mbps speed when both devices 100 Mbps capable
I've designed a circuit board with a Microchip switch (KSZ9897) going to a Ethernet-to-VDSL module (LX200V20).
The PHY ports between the two devices are connected using a transformerless connection ...
1
vote
1answer
93 views
How to solve infinite grid with the observing terminals at diagonal of infinite square matrix?
The answer given is 2/3ohm solution is not given but I can expect how they got that answer but can't justify the way.
0
votes
0answers
28 views
Configuring Xbee3 Mesh role from a microcontoller
I am looking to set up a Zigbee Mesh Network using the Xbee3 module, but a question that I have is would I be able to configure this network (and even change roles) “on the fly” using an STM ...
0
votes
0answers
14 views
Average and maximal number of time slots in adaptive tree walk protocol
I was wondering if it is possible to know the maximal and average number of time slots that will pass until and including the time slot in which there will be a successful broadcast, knowing that two ...
0
votes
0answers
10 views
finding the minimal length of a broadcasting frame in a channel(CSMA/CD)
i am unsure about this question. would appreciate your assistance with it.
in the following CSMA/CD network with cable length L and propagation T. assuming that the signal is not decreasing and there'...
-1
votes
1answer
54 views
Bit-Map vs ALOHA protocol
So i have been reading about ALOHA and Bit-Map protocols and i am note sure which is more preferable in the following scenario:
8 stations, numbered 0-7 want to transmit in any given time slot. ...
1
vote
0answers
101 views
What is maximum symmetrical output voltage swing in this case?
I'm pretty new to Electronics and hence the following doubt. I could not understand how the authors reasoned out the swing limits for this problem ((b)-part only)
0
votes
0answers
21 views
calculating the probability of a successful broadcast in p-csma protocol
am quite unsure with the following question. would appreciate your help with it:
in a 3 stationed p-csma network, where \$p=0.3\$, we know that in \$t_0\$ the network is restarted, the channel is ...
3
votes
1answer
130 views
How do coaster table pagers order themselves?
You've probably seen them. Those coaster or puck size electronic things they give you at a restaurant to buzz you when your food is ready.
A seemingly common element of their design is that they have ...
0
votes
2answers
47 views
can arduino UNO be programmed to measure the analog voltages of 6 resistor ladder network without using switches [closed]
6ea 1k resistors connected in series to +3.3v and Gnd.
Q how can arduino UNO A to D be programmed to measure the analog voltages of 6 resistor ladder network without using switches ?
0
votes
1answer
59 views
What does it mean by, “No voltage is applied”?
I've a very basic query.
If a question says, "no voltage is applied to the circuit" does it mean the battery is replaced by short-circuit (since, no voltage => 0V) or by an open-circuit (literally, no ...
0
votes
3answers
68 views
Earth Fault in a TT Network: Current loop, or charges flowing from one grounding to the other?
There are serveral things I (yet) don't understand about the T-T-earthing system. The most important one is that I don't understand which way the the current takes in case one of the conductors (for ...
1
vote
0answers
52 views
a tricky question regarding CDMA with 4 stations
i have encountered this tricky questions that left me really confused, would really appreciate your insight regarding it:
given a cellular system with four stations that utilizes CDMA.
given the ...
1
vote
1answer
101 views
Direction of current flow in resistor networks
We have a simple resistor network \$g\$ with \$5\$ nodes and \$6\$ edges (resistors) as given below:
We assume all resistors have the same resistance (say \$1\$ Ohm, so homogeneously distributed ...
0
votes
1answer
44 views
What are the factors that affect delay/latency between base stations?
I am modelling a 5G network, with the uplink and downlink being decoupled and treated as separate networks.
I am exploring the integration of fog computing and how latency varies between different ...
1
vote
2answers
182 views
Shifting of current sources [closed]
Can someone justify shifting current sources iam not able to understand how it is done
0
votes
1answer
16 views
Two port network z parameter determination
I would like to know how it is solved in book as I found that it is way quicker than the way I solved. Any detailed explanation will be appreciated.
0
votes
0answers
42 views
Wifi coaxial cable type unknown
Quick question, I was unable to identify the coaxial cable type used in wifi devices(routers ,tablets,etc.) , very thin grey cable approximately 1mm in outer diameter, I need to know the type so I can ...
0
votes
2answers
146 views
Fitting of continuous transfer function
I measure a network's transfer function using a network analyzer and therefore have a set of complex data points, representing the network's gain and phase. I wish to fit a continuous, rational ...
0
votes
1answer
43 views
THINNET 10BASE2 Network using RG-58 Coaxial Cable operating frequecy?
I am trying to figure out what the signal frequency of a 10BASE2 network is. Specifically the frequency of the signal being carried over coaxial cable. Data transfer is 10Mbps and the network adapters ...
4
votes
3answers
152 views
What determines the frequency of network cable
You have Cat6, 23 AWG, rated for 250Mhz frequency. You then have Cat6a, 23 AWG, rated for 500Mhz. Both are unshielded.
How is Cat6a able to transmit data at a higher frequency then its counter part?
...
0
votes
1answer
234 views
Difference b/w Symmetric and Reciprocal Networks
A circuit exhibits symmetry when interchanging ports across a plane of symmetry results in no change in the impedance, admittance or scattering parameters of the circuit.
Reciprocity also means ...
0
votes
1answer
143 views
How to understand Transmission and Propogation delay formula
I have three questions below. I would like to understand how their respective answers were reached, this is a question in my current class and everyone in the class has A-Level mathematics experience -...
0
votes
0answers
47 views
Determine Y-parameters for given circuit. [Used Nodal Analysis]
I am trying to solve this circuit for past 3 hours, no success, so I am posting here.
simulate this circuit – Schematic created using CircuitLab
I used nodal analysis, I will go over the ...
0
votes
1answer
60 views
Trouble with instrumentation and simulation of the common-mode response of a filter
I have been struggling to obtain the Bode plot of common-mode response of a filter. I first simulated it using LTspice, then I used a USB network analyzer. Both do not match each other and to the ...
1
vote
1answer
493 views
Calculating total resistance between two points (triangle resistor network)
I want to calculate the total resistance between the 2 points: A, B.
I've tried using the Delta-Wye method, but I'm not sure how to apply it to my problem since there's 6 resistors and not 3 (usually ...
0
votes
0answers
18 views
deriving an equation for wireless network capacity
I'm trying to derive an equation for wireless network capacity given topological constraints of the nodes and certain obstacles... but before I get that far, I want to understand the most simple case. ...
0
votes
1answer
33 views
Can a dependent voltage/current source have some impedence/admittance,respectively?
Im studying 2-port networks, for Z parameters equations, there is general equivalent circuit given, in which dependent voltage source is given, I do know about dependent voltage sources, but do these ...
0
votes
2answers
49 views
Network Analysis for finding power delivered
We need to find the power delivered by the 5V source in the above network. I usually apply superposition theorem when I need to find the power delivered by a source when there are many power sources ...
1
vote
1answer
178 views
Calculating input impedance of 3 port network
I am trying to derive a expression for calculating the input impedance of a 3 port network to use as direct calculating code and avoid SPICE/simulator solving of the same.
I am able to solve the ...
1
vote
1answer
40 views
Purpose of Bus Analyzer
I've not found the clear explanation for the WHY we use the bus analyzer except to capture and analyze data across the communication bus. Yes, we observe message structure, such as command words, ...
0
votes
2answers
165 views
How to determine the physical location on a RS-485 daisy chain / bus topology?
I am trying to build a "daisy chain" using several Arduinos and MAX485 transceivers. All boards have a temperature sensor attached to it. A 9V battery supply all boards in the chain.
I am trying to ...
-1
votes
2answers
78 views
What communication method shouild I use [closed]
So I wan to control a bunch of devices.
I though first of using RS485 but after some digging I figured out this might not work as I don't really have a pure daisy chain.
The configuration I would like ...
0
votes
3answers
69 views
Hardware requirements for 10Gbps line rate packet processing
How do I calculate the horse power required for worst case packet processing scenarios?
First, a little more background, I'm building a device for packet analysis. My test box currently runs on Linux ...
0
votes
1answer
70 views
Impedance Matching Network with tracks+connectors in between (practice)
I've been struggling on how to design (and develop in practice) an impedance matching network with some traces/tracks/paths (whatever you wanna call it) and some connectors in between. So here is the ...
1
vote
1answer
56 views
Bounds of impedance matrix of a passive two port network
If we consider the impedance matrix of a linear, reciprocal passive network (Z12 =Z21 because of the reciprocity),
$$
\begin{bmatrix}
Z_{11} &
Z_{12} \\
Z_{12} &
Z_{22}
\...
