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Questions tagged [electrical-engineering]

Study and applications of electricity, electronics, and electromagnetism. Use this tag when someone who has trained as an electrical engineer is likely to be able to answer your question.

409 questions with no upvoted or accepted answers
8 votes
1 answer
162 views

How can I estimate blocking window distance in an sCMOS sensor setup?

I am trying to establish an appropriate distance between a spectrograph output window and a CMOS sensor. The spectrograph creates a focused image on the CMOS sensor but I am trying to restrict the ...
Akhil's user avatar
  • 181
7 votes
0 answers
583 views

BER peroformance of MPSK and MQAM in Rayleigh fading channel

I have a question regarding bit error rate (BER) performance over the Rayleigh channel. I observed BER performance over the AWGN channel using Simulink in MATLAB. I used to change the "SNR" parameter ...
Sara's user avatar
  • 81
6 votes
3 answers
235 views

Need some advice, control system animation. Appreciate some help!

I would like to have a 3d simulation of a helicopter landing on a ship. I thought about using matlab for this, as a far as I know you can connect models from Simulink to virtual worlds using blocks, ...
Alex's user avatar
  • 61
6 votes
0 answers
646 views

How does LTE eNodeB set the Base Station output power?

I'm interested into the power radiated out of an eNodeB (LTE/4G) radio base station: which parameters does this power depend on, if they are constant or relying on the environment... All of this in ...
Amesys's user avatar
  • 261
5 votes
1 answer
435 views

Who wrote the 1990's parable about the object oriented toaster?

In the 1990's (or earlier?), an unattributed parable was written about an electrical engineer and a software developer who were tasked with building a toaster. You can view the piece in its entirety ...
Roxy's user avatar
  • 151
5 votes
0 answers
674 views

Fluid dynamics of non interacting tanks in series

I have a system like this: and I have to estimate the height of the lower tank. First of all, I'm considering that I have a non-viscous, incompressible fluid in steady flow. Base apertures The ...
Unnamed's user avatar
  • 229
4 votes
1 answer
144 views

How to reconfigure a control box unit for an SCN5 actuator

An image of the actuator is below. I have a setup that was given to me where there is two configurations, namely 50mm travel and back, and 75mm travel and back to home position. There are two switches ...
jay1994july's user avatar
4 votes
1 answer
187 views

allan-variance noise terms of MEMS accelerometer

Specific noise terms are given in datasheets of MEMS sensors. In example the specification of accelerometer contains information about random walk and in some cases the bias instability. Both ...
annemeler's user avatar
4 votes
0 answers
100 views

Is there any side effect to soft start an AC motor?

I have a ground to water heat pump for my home heating/cooling (scroll compressor). The 3-phase 15kW-peak motor can be soft started but this option is off by default. I'm aware of all the positive ...
Kyle_the_hacker's user avatar
4 votes
0 answers
89 views

Technical Analysis to determine optimal Cellular to transmitter location

At a very high level what are required technical analysis to determine the need to for a new 4G LTE cellular transmitter in US? find find the optimal location for the transmitter in US? Back Story: ...
user7083's user avatar
  • 570
4 votes
0 answers
240 views

LTE channel characterization from Time Domain waveform

I am currently interested into the diverse Downlink LTE channels broadcasted over air after some (QPSK, 16QAM...) modulation. More precisely their waveform. I would like to know if, with a good ...
Amesys's user avatar
  • 261
3 votes
4 answers
101 views

How can I map a global spherical position of a central normal vector to the rotation of 2 perpendicular motors?

I have a machine that rotates two concentric frames. The outer frame has a motor that rotates it relative to the global y-axis, and the inner frame has a motor that rotates it about the outer frame's ...
Andrew Bechdolt's user avatar
3 votes
1 answer
526 views

Raspberry pi, Stepper Motor and level shifter

It is my understanding that a Rasperry Pi cant handle 5V on the GND-pin. For that reason I got myself a level-shifter which is supposed to be able to change the output from 3.3V to 5V. I need it to be ...
Nlas's user avatar
  • 53
3 votes
0 answers
51 views

Understanding transformer secondary winding

I purchased a step down transformer from a junk yard. I tested the transformer and it works but I am confused as to the secondary winding. The primary side has these markings G 0V 100V The secondary ...
eeguyee's user avatar
  • 43
3 votes
0 answers
61 views

Problem reading control effort frequency response plot

I am trying to plot the frequency response control effort of a control scheme in Matlab, and in particular I want to do this for different values of tau, which is a constant used to add a pole at high ...
J.D.'s user avatar
  • 225

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