# Questions tagged [electrical-signal]

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### Why does the control effort increase if the bandwidth of the system is higher then the bandwidth of the plant?

I am studying control systems and I am focusing on the control effort. I have seen that if I place a pole at higher and higher frequencies, if the bandwidth of the system goes above the bandwidth of ...
24 views

### Generating band-limited NRZ signal

What is the bandwidth of a NRZ signal (of a given frequency) and how would you directly synthesize a discrete version a band-limited NRZ signal at some higher sample rate?
52 views

### What is the electrical equivalent circuit for this interaction? (Is this correct?)

A DSP text gives an example of an ideal mass striking an ideal string here: This is drawn as an equivalent electrical circuit as follows, where each R represents one of the two string segments the ...
52 views

### Doppler shift in police radar

I don't understand how the radar frequency can be extracted from this diagram : (source:https://copradar.com/rdrparts/) and specially i don't understand what is the role of PLL and IF circuits and ...
43 views

### What does kchip/s datarate mean? [closed]

I am working in w mbus and came across this term kchip/s in datarate like 37.768 kchip/s what does the unit specify?
91 views

### Nyquist frequency , sampling distance

I have few questions I tried to solve regarding nyquist theorem, and I would like to see your opinion if I'm doing it correctly?(one I know the answer second one not sure). 1.Let $f(x)$ and $g(x)$ be ...
100 views

### Nyquist sampling

I know that if $f_\mathrm{m}$ is the "Nyquist frequency" (max frequency) and $f_\mathrm{s}$ sampling rate then $f_\mathrm{s}>2f_\mathrm{m}$. Am I correct so far? I have a signal $x(t)$ with max ...
2k views

### What is the difference between undersampling and oversampling in analog to digital conversion ?

When converting a signal from analog to digital, we observe undersampling and oversampling. Does oversampling means that the sampling frequency is greater that the signal's frequency and does ...
674 views

### How to envelope a non periodic Impulse signal?

I want to analyse a trc oscilloscope file, find impulses and envelope them. In the end I want to plot the envelope. data file (trc): https://ufile.io/z4m4d Code: (Python) ...
92 views

### Separating two frequency component

How can we separate two frequency component when they get mixed means when signal get mixed with noise how receiver can judge which part is signal and which is noise ?
62 views

### Unexpected peaks in power density following downsampling and filtering

I first applied a 100 Hz lowpass filter to my data, which was recorded at 30000 Hz: ...
93 views

### non-Mel Frequency Cepstral Coefficients

I'm trying to summarize the frequency domain information of an electrical signal as a feature engineering step for a machine learning algorithm. My hypothesis is that an anomaly will appear in the ...
25 views

### How best to analyse a 130volt +/- 20volt signal?

I want to measure and log a relatively high variable voltage signal, with minimum impact on the original signal. Normally the signal should average 130volts and vary by +/- 20volts at 10Hz. However ...
58 views

### Time Delay Margin

I have a question regarding the time delay margin. I know the definition of time delay margin now I want to know that for the stability of the system is it good to have large time delay margin or ...
276 views

### Power Spectrum of the Current of Compact Fluorescent Lamp (CFL) Compared to the AC Input

Is it possible for an AC current (current passing from CFL) to have a harmonic component greater in magnitude than its fundamental? In my country fundamental frequency which carries power is 50 Hz. ...
1k views

### Problems Using FFT to Compute Impedance in a Model Neuron

I'm a neuroscientist currently investigating the resonance properties of a single neuron model that a colleague and I have constructed. The language we code in is Julia, which I hope is similar enough ...
197 views

### How to look at Rubidium frequency standard using the oscilloscope?

This question is about the checking hardware, please help if someone who has done it before. I have the Rubidium frequency standard: http://www.thinksrs.com/products/PRS10.htm and the Oscilloscope: ...