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Can I make my Battery Pack Much Efficient in my DIY Power Bank?

I was having a project of a DIY power bank as a backup for my phone. I need to use super thin batteries for this application. my goal is to make this power bank as efficient as possible. now I want to ...
Nsj09's user avatar
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2 answers
72 views

GPS fix with plastic lid closed [closed]

I have a product where I'm using Adafruit Product 746 (Ultimate GPS Module - 66 channel w/10 Hz updates - PA1616S - MTK3339 Chipset). I'm using this external active GPS antenna "32db High Gain ...
vicatcu's user avatar
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1 vote
1 answer
96 views

Linear system - causal and memoryless system (integral)

\$T{(x(t))} = \int _{-\infty }^{+\infty }sin\left(t+\tau \right)x\left(\tau \right)d\tau\$ Is this system causal or not? Is it memoryless or not? At first I thought it was not causal and with memory ...
Ben Shaines's user avatar
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0 answers
14 views

Why am I getting completely different voltage and power results from Simscape phasor simulation and load flow simulation?

I am simulating the power system in the picture, with two generators and three PQ loads. My problem is that when I try to simulate it in Simscape, the load flow analysis gives me completely different ...
Jiří Nývlt's user avatar
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0 answers
40 views

Power System Economics Generation Dispatch Calculation

Assuming that the annuitised investment cost of transmission link is 37 € /MW.km.year, calculate the network annual cost and annual network profit for the three proposed cases. I'm trying to calculate ...
Student's user avatar
4 votes
2 answers
462 views

Impulse response of an RL circuit

I've got homework in the Signals & Systems class I'm taking, and I'm trying to find the impulse response to this circuit whose transfer function I've found. In the class we've done practice ...
m3ll0w's user avatar
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0 answers
22 views

Long distance cable to monoblock centrifugal pump from PV VFD [duplicate]

I want to install a three phase 10 HP monoblock centrifugal pump that is around 200 meters away from the PV solar Vfd. The solar system is installed with 16 solar panels of jinko 555 p type. I would ...
Mir Ali's user avatar
0 votes
2 answers
138 views

Is it a bad idea to use CAN-Bus to control robot wheels?

I am working as a student on a 6 wheel robot project and have problems deciding what communication protocol to use for controlling the locomotion system. The idea is to use a Master Controller in a ...
curious_engineer's user avatar
0 votes
0 answers
160 views

Modern DDR4 memory access latency system analysis

The memory access latency for the Intel Core i7-11800H (source: chipsandcheese, cpu latency for Intel Core i7-11800H), using DDR4-3200, reveals specific timings: 1 ns for L1, 3 ns for L2, and 13 ns ...
Prajwal Rathnakar Hegde's user avatar
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0 answers
25 views

Is it required to have both ATS/ACTS and AMF in electrical system?

I just read an electrical system layout and specification, where the designer put an ACTS on the distribution panel (to switch between the main and generator), and AMF on the generator. What I read ...
lmkencana's user avatar
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2 answers
117 views

Connection between impulse response and LTI system

I am always confused by this, please make it clearer for me here: 1)If I have a system which has Impulse response, which means \$H(j\omega)\$, so my system is LTI. Am I right? 2) Same with transfer ...
user323806's user avatar
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0 answers
56 views

What is the minimum distance between medium voltage electrode and low v earthing electrode

And what is the best way for grounding the koisk which have medium section transformer and lv section. The required earthing system is TNS system that requires neutral and pe in the same electrode
Omar Zain's user avatar
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0 answers
81 views

Discrete-time system transfer function

I am attempting to calculate the discrete-time system transfer function G_HP(Z) from G(s). The continuous transfer function, $$G(s)=\frac{5e^{-\tau s}}{s+5}$$ Where $$\tau =1$$ and $$e ^{-\tau s}$$ is ...
Elbobbo's user avatar
3 votes
0 answers
105 views

DC Motor Difference Equation Digital Control System

This shows a DC motor drive with the voltage input. And the discrete-time model is like this The difference equation should be something like this: Where the C_1T is the inverse laplace transform of ...
Kadal's user avatar
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119 views

LTI system: can I infer the system is causal based only on the transfer function without the ROC?

Suppose we have an linear time-invariant (LTI) system which acts on discrete signals. Suppose someone tells us the transfer function is: $$H(z) = \frac{1}{z-2},$$ but doesn't specify the ROC. Now the ...
Algo's user avatar
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1 answer
65 views

Z-Transformation Function

I have a system given, which looks like this: simulate this circuit – Schematic created using CircuitLab Now I am task with giving the "difference-equation": ...
ElectronicsStudent's user avatar
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1 answer
51 views

Impulse response of a system with a transfer function with a phase discontinuity

I am puzzled about an impulse response of a system. The transfer function is: \begin{align} T(\omega) = A_0 e^{-j \Theta_0 \mathrm{sign}(\omega)} \end{align} where the sign() function is the sign of ...
Pierre Polovodov's user avatar
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0 answers
35 views

System design of a multi PCB project

I am currently supervising the design of a system made of several PCBs and cables and I am looking for a tool to help me maintain an easy overview of the interfaces. I have been searching around and ...
Cesco's user avatar
  • 59
2 votes
1 answer
69 views

Signals and Systems: applying time shift operator on a system in \$\Psi \{x\}(t)\$ notation

I didn’t quite understand how to apply a time shift operator on a system when checking time invariance. For instance, if we have the system: $$\Psi \{x\}(t)=(x(t))^{t}$$ and I want to shift it \$\tau\$...
Piratemetaldrinkingcrew's user avatar
2 votes
1 answer
338 views

ADS8598S - how to connect to a MCU - general Architecture question

For a future project I'd like to use the ADS8598S from Texas Instruments, which is a "higher speed" 8 Channel simultanously sampling ADC with 18 Bits and a max. Sample rate of 200 kSPS per ...
pm4812's user avatar
  • 67
3 votes
1 answer
552 views

Finding transfer function from Bode plot

While I know how to find the transfer function from the response graph, I don't know how to find it from Bode plot. What I know about the system: The system is a second order system The system has no ...
Or Perez's user avatar
1 vote
1 answer
104 views

Calling embedded systems vs. calling embedded electronics

I know that the name "Embedded systems" is way more adopted worldwide. However, it always intrigues me since, in engineering, the term "system" is usually used when it is intended ...
Rubem Pacelli's user avatar
-1 votes
1 answer
140 views

What is the phase difference between phases in 3phase system, if system becomes unbalanced

Is the phase difference between the voltage phase 120 degree in an unbalanced system if not what how can we calculate it? I will try to explain this a litte more clearly. More specifically in this ...
Seb's user avatar
  • 57
-3 votes
2 answers
124 views

Can we say that this system has a memory? [closed]

This unit step response has a memory because of (n+1) but can we say that whole system is not memoryless? If we can, why?
Mando's user avatar
  • 131
2 votes
3 answers
574 views

Signals and systems - Find the inverse Fourier transform of a RLC circuit

I was analyzing the following RLC circuit: And applying the Fourier transform on the circuit, I ended up with the following transfer function: $$ H(\omega)=\frac{V_c(\omega)}{V_i(\omega)}=\frac{1}{1+...
Jjeico's user avatar
  • 141
-1 votes
1 answer
130 views

Are comparators essential in a negative feedback model, cybernetic system?

Since there are no cybernetics.stackexchange, I thought it would be meaningful to ask this to people who would possibly understand systems theory and cybernetics. Can there be a system, a negative ...
egg destroyer's user avatar
1 vote
2 answers
439 views

Signals and systems - Does y(n-1) affects when I check the system for linearity?

I have the following system: $$ y[n] = \frac{x[n]}{3}+ 2x[n-1] -y[n-1] $$ And I have to check its linearity, but I don't know if i'm supposed to evaluate y[n-1] as if it was a x[n-1], or if I have to ...
Jjeico's user avatar
  • 141
4 votes
2 answers
3k views

Convert three-phase to a single-phase

For a local power grid powered by a 20 kW diesel generator, I want to feed a set of single-phase loads. But I have problem with imbalance. I have equally divided consumers between each phases as much ...
Pouya Sarvari's user avatar
1 vote
1 answer
373 views

Derivation of zero state response for LTI system with convolution

Consider this derivation of the zero-state response \$y_{zs} \$ for an LTI system caused by an input \$x(t) \$: - $$\begin{smallmatrix}\begin{array}{r|cc} \text{Input} & \text{Output} & \text{...
Carl's user avatar
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0 votes
0 answers
51 views

Linearity and how it affects the response of a system

I've been reading Schaum's outlines for Signals and Systems, and stumbled across the beginning of impulse responses. However, I saw this: Which I understood as the impulse response being "what ...
enrico sebastian's user avatar
0 votes
1 answer
87 views

Laplace transform, How to calculate the output of a system to a infinitely extending signal?

I need to calculate the output of a system given as \begin{align*} H(s) = \frac{s}{(s+1)(s+2)} \end{align*} For an input \begin{align*} e^{3t} \ \ \ \ \forall \ t \end{align*} I currently ...
Jonathan Wick's user avatar
0 votes
1 answer
460 views

Second order transfer functions, intrinsic time constants and responses

Say I have the following circuit: - simulate this circuit – Schematic created using CircuitLab This circuit has the following transfer function \$H(s) = \frac{V_o(s)}{V_{in}(s)} = \frac{\frac{1}...
Carl's user avatar
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1 vote
0 answers
313 views

Carry-select adder - Time calculation

a) Suppose a binary pick-up adder (carry-select) of 32-bits, comprising 4 sub-sections adders spreading carry of range 8 bits. Show the values ​​obtained internally in the circuit of this adder to ...
Mary Star's user avatar
2 votes
5 answers
2k views

Does the DC component of any signal also carry information?

Every signal carries some types of information in it. Mathematically we Know from Fourier series that these signals can be represented as a sum of its DC component and all the harmonics of fundamental ...
user215805's user avatar
  • 1,184
0 votes
2 answers
78 views

Confusion in proportional controller

I was revising proportional controller from here and got confused in following figure which is common in many books also. Since output of controller is proportional(by factor K) to error function but ...
user215805's user avatar
  • 1,184
13 votes
5 answers
2k views

How do power grid systems supply power to new loads coming online?

I know that in a power system there are no energy storage elements. Due to this, as soon as power is generated by the generators it is transmitted to the end user where the power is utilized. Say a ...
Sandaru Akalanka's user avatar
0 votes
0 answers
38 views

Charaterization of waveguide to coaxial adapter

I'm trying a method to characterize a high frequency waveguide to coaxial adapter( 2-port network). For this, I use 3 adapters A1, A2, A3. After a TRM calibration, I measure A1 connected with A2 with ...
DODO's user avatar
  • 1
0 votes
1 answer
103 views

Improve system response by looking at transfer functions

This question is quite long - I apologize for that. I am working on a car in a course project. In order for the car to drive efficiently, it has to have a \$\lambda \$-value of \$\lambda=1.3 \$ for ...
Carl's user avatar
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2 votes
2 answers
244 views

How to derive transfer function for DC feedback coupled transistors?

I am not sure where to start deriving the transfer function of this circuit. If I do a control diagram then I need to know the initial values to convert the system into the Laplace domain, so I guess ...
user avatar
0 votes
1 answer
134 views

Amplifier gain in budget links

How does an engineer calculate the required power/low-noise amplifier gain after she/he is provided with the link budget of the system?
Khalid Nezami's user avatar
0 votes
1 answer
418 views

Confusion regarding finding closed loop transfer function and damping constant from open-loop transfer function

I have second order transfer function $$ G(s) = \frac{1.247}{s^2+9.76s+23.8}$$ G(s) is in the forward path of a unity feedback system. How do I find the closed loop transfer function and damping ...
Michio Kaku's user avatar
3 votes
0 answers
226 views

What is wrong with my Simulink model of a first order Delta Sigma Modulator?

I'm trying to design a Delta-Sigma Modulator for frequency synthesizer applications and am (just right now) figuring out how to properly configure a first order DSM in Simulink. I've made a few small ...
Jack's user avatar
  • 51
2 votes
2 answers
1k views

How do causality and stability affect the response of a linear time-invariant system?

Suppose that there's a linear time-invariant system with the following transfer function: $$H(s) = \frac{1}{3(s-2)}-\frac{1}{3(s+1)}$$ If the system is causal and stable, I can determine \$h(t)\$ by ...
nickh's user avatar
  • 123
0 votes
2 answers
71 views

Memory Selection and NOT Gate in Embedded System

I'm currently studying Embedded Systems and in the topic of drawing a schematic for the address of a microprocessor (16bits address x 8 bit data (64Kbytes)) with 1 ROM 32Kx8 and 1 RAM 32Kx8, I simply ...
Diogo Gonçalves's user avatar
1 vote
1 answer
64 views

What is the controlled variable in this particular case?

I have a question, maybe you can help me because I am not sure of the correct definition. As an example I have a plant with a measured output y in a closed loop system. But as the feedback variable I ...
beowl1's user avatar
  • 21
1 vote
0 answers
55 views

Linear system question

I have been struggling with this linear system's question. [] I have arrived at a solution, but i do not think my solution makes sense.
Dimitar Zhekov's user avatar
0 votes
1 answer
122 views

Early Deadline First (EDF) scheduling in real-time systems feasibility test proof

I am trying to prove Theorem 6.2 on page 127 of the book Real-Time Systems by Jane W. S. Liu: http://www.cse.hcmut.edu.vn/~thai/books/2000%20_%20Liu-%20Real%20Time%20Systems.pdf It is based on Early ...
Matt's user avatar
  • 149
0 votes
0 answers
82 views

What is the black two-leg sensor?

This is part of the Auto Sun Tracking Pump. It is attached to the agriculture solar system but damaged and I want to replace it. I don't know the black two-leg sensor.
Janaab's user avatar
  • 9
0 votes
1 answer
62 views

4*4 reverse matrix code in matlab wich has variables

Here is the system of which I have found the state space equation. I need to get the transfer function. [SI-A] is a 4x4 matrix and it's so hard to get the reverse ...
ghazaleh moghadam's user avatar
2 votes
1 answer
185 views

Problem in selection of state variables of inverted pendulum

I was reading about controller design from the book Control System Design, An Introduction by Bernard Friedland. In one of the examples of controller design for an inverted pendulum, the author ...
user215805's user avatar
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