Questions tagged [analysis]

Questions attempting to analyze the mathematical properties of a formula, the inner workings of a protocol, or the design of a given circuit.

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132 views

Simple circuit question: nodal analysis

"simple circuit" I'm trying to find vout as a function of v1,r,c, and v2, but I'm i'm kind of stuck on what to do. I'm pretty sure you need to do nodal analysis, but I've never really encountered a ...
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0answers
60 views

Please explain how the question was solved shown in the picture?

I did not understand how the KVL equations were formed and why the current in the other loop was not considered like it usually is eg:(i2-i1).
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Please help with part of this textbook question

Please help me solve this problem for the superimposed case when only the far-right current source is used. What I have tried is assuming there are 3 voltage divisions {on the far left, v is 1/2 of ...
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1answer
52 views

Using mesh analysis find all current

Using mesh analysis find all the current in the given circuit Schematic redrawed:
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2answers
125 views

White and Pink Noise Generator Circuit - Cryptic AC Analysis

The “Electronic Devices and Circuit Theory” book (by Boylestad, Nashelsky) gives a brief description of a random noise generator circuit at the end of “BJT AC Analysis” chapter. (Btw, exactly the same ...
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1answer
92 views

PSpice - simulation worst case - delay on AND gate?

I have a question to someone who is familiar with PSpice analysis. I have a simple circuit as below and everything works good with "typical" simulation - dstm1 gives positive impulses continously and ...
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1answer
37 views

DQ frame in foc of induction motor

How to find the orientation of DQ axis of rotor and stator in induction motor using iq and Id currents? Particularly in foc of im, I have measurement of stator ia, ib, ic and rotor omega. However, ...
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2answers
537 views

Are there any cases that Source Transformation method can not be applied?

When I tried to use Source Transformation method on the 12 V voltage source the problem gave me a wrong answer. If I transformed the 2 A current source it works just fine. My question here, Is there ...
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1answer
53 views

Help to determinate stability of Opamp Circuit

I have background in software but this time I need to build a circuit for scaling a signal from 15 to -15 VDC. At college I took some subjects on Electrical topics so I have read to remember, after ...
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1answer
437 views

IIP2 Second Order Intercept Rule of Thumb

I'm faced with the problem of explaining the harmonic production in a system where the second order intercept points of the cascaded components are unknown. As a way to bolster my explanation, I would ...
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1answer
62 views

Finding a Fourier series of a Burst Fired sine wave having consecutive 2 cycles on & 2 cycles off?

I have been trying to find the solution of the following problem but with no luck. I have a system that generates a waveform of sinusoidal type with the only difference being that this wave has 2 ...
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40 views

Trying to use VNA for impedance analysis

I'm trying to use a Tektronix TTR506A to measure the impedance of a DC bus bar. I have DC blocks in place, and connected to the bus bar in a 2-port configuration. What are the correct formulas to use ...
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88 views
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1answer
32 views

How to calculate reactance from an impedance analyzer circuit?

Background I have an impedance analyzer that uses the below circuit: Source One can measure impedance of the device under test (DUT) by using the following formulas: ...
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2answers
236 views

Voltage transfer curve; MOSFET

How to classify the voltage transfer curve into various regions, as shown, (In the image, \$V_0\$ refers to \$V_{DS}\$ and \$V_i\$ refers to \$V_{GS}\$) Since, the various regions of operations are ...
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2answers
101 views

Mathematical therefore symbol (∴) needed for documenting circuit analysis calculations [closed]

When doing circuit analysis calculations I use the mathematical therefore symbol in my calculations and need to document my iterations to support my analysis. There is no ASCII code for the "therefore"...
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1answer
125 views

Power amplifier simulation and real time experiment mismatch problem

Thanks in advance to anyone who will take the time to read my first post here. At present, I am doing a simulation of a power amplifier in LTSPice. The schematic and relevant files are uploaded in a ...
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1answer
130 views

Health index / performance curve of a motor

I am collecting daily data of motors that consists of vibration in three direction x,y,z , RPM, Temperature, kVAh, kWh, kVArh, average voltage (LL), average voltage (LN), average PF, average current ...
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1answer
67 views

DC Analysis of Transistor Circuits - Double vertical line symbol

I have stumbled twice across this symbol || being used in the analysis of transistor circuits. An example can be seen at this address: http://www....
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0answers
37 views

Mesh analysis to find Vx

simulate this circuit – Schematic created using CircuitLab I'm trying to solve the following circuit using mesh analysis. Here is my equation. The goal is to find the value for Vx. **Vx is the ...
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2answers
69 views

Op-Amp analysis without using op-amp gain

I have a question concerning this op-amp problem for which I need to find an expression for \$v_{out}(t)\$, where \$V_B\$ has a constant value: simulate this circuit – Schematic created using ...
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1answer
38 views

Node analysis with voltage source, How to solve with matlab?

So i have this matlab homework where i need to find voltage on Y2 and Y3 using node analysis. Arrows indicate direction of current flow in branches. simulate this circuit – Schematic created ...
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0answers
20 views

TINA/Spice/UCC3803: Unable to tune analysis parameters for 0.8 V to 4.8 V DC-DC boost converter design simulation

I need to simulate a DC-DC boost converter on TINA-TI. However, I cannot get the convergence necessary to carry out these simulations. I've tried using the parameters utilized in online reference ...
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2answers
103 views

Worst Case Analysis of the LED circuit - Reg

I need to perform the Worst case analysis of the LED circuit attached. The value of the resistor has already been chosen and I am doing the calculations for min, typ and max current. Please bear with ...
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2answers
24k views

Diode circuit analysis using ideal diodes exam problem

I've been reviewing some past exam and stumbled across this question So I need to find the current I through the middle diode and the voltage across the bottom left 10KΩ resistor. To try solve this ...
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1answer
207 views

Differential amplifier and large signal analysis

Let's consider this circuit: Razavi makes the large signal analysis in the ideal case, that is with an ideal current generator. He shows that Ic1, Ic2, Vout1, Vout2 and (Vout1 - Vout2) are function ...
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0answers
126 views

Why the opposite of the passive sign convention is not the active sign convention?

Studying the fundamentals of circuit theory, I was reading the Wikipedia article on the Passive Sign Convention and found out about the Active Sign Convention (ASC). After searching many introductory ...
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2answers
66 views

Resistive circuit analysis with dependent current and voltage source

The question in a study book says to find the current through R2. I have very little experience dealing with dependent current and voltage sources, so I get thrown off when performing loop current (...
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3answers
185 views

Order of precedence for parallel operator

In electrical engineering the parallel operator || gives half the harmonic mean of two values. E.g.: \$R_1 \parallel R_2 \equiv \frac{1}{1/R_1+1/R_2} \$ But how should you compute \$kR_1 \...
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36 views

Compensating transistor biasing

How to analyze the quiescent conditions of the circuit below assuming the tansistors are on an array such as CA3096? (Fig 5N.21 from Learning the Art of Electronics) Both emitters are at ground, so ...
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1answer
64 views

Mesh Analysis has failed to solve this circuit

I built the following circuit in LTSpice and found each mesh currents to be (which also matches the answer sheet provided by my professor): i1: 9A i2: 8A i3: 11A i4: -6A However, I am unable ...
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26 views

Calculating low-pass filter prototype specifications

So I'm just wondering what I need to figure out before I can actually calculate anything here, (only considering the a-part now)? I understand that 2.5 GHz should be 3dB and 3.75 GHz should have 25 dB ...
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2answers
47 views

Mesh current analysis voltage and current source

Can somebody please point me in the right direction here Im trying to create two equations to solve for IA(left hand loop) and IB(right hand loop) I need two equations consisting of IA and IB to ...
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3answers
4k views

Simulation for a transmission loop using PowerWorld

I am now learning how to use PowerWorld Simulator. However, I faced some problems when I tried to enter the data given in the paper. I want to simulate the following transmission loop: First things ...
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1answer
309 views

Battery Charge and Discharge Time

I am doing a case study on battery back up of a wind system with the following specification: System size: 10 kW which runs continuously for 5 hours per day. Battery Calculations: Battery type: ...
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2answers
120 views

How to calculate the voltage gain in this picture?

simulate this circuit – Schematic created using CircuitLab I know that by using \$A_v=-G_mR_{out}\$, and \$G_m=\frac{I_{out}}{V_{in}}\$, we can get the voltage gain of this circuit. After the ...
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1answer
75 views

Source Transformation

Ok, I have modified my question again about the same circuit seen below: I have to simplify the circuit using source transformation and then find the current ix. I have attached my attempted ...
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3answers
38k views

What's the difference between MOSFETs and BJTs (from a circuit analysis perspective)?

When analyzing circuits with transistors in them, when does it make a difference whether they are MOSFETs or BJTs?
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2answers
789 views

Fourier transform to understand filtering on PWM

Is it correct to analyse the impact of a low-pass by regarding at the Fourier transform of a PWM signal, even if this one is generated with a H-Bridge ? And deduce that the higher frequencies forming ...
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1answer
50 views

Current change through Series resistors

My question surrounds a simple scenario. I have a 12V DC power source connected to 2.2kΩ/10kΩ/22kΩ resistors in series. For an assignment, I have theoretically calculated Voltage drops across all ...
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1answer
934 views

Will this AM radio receiver work?

What I'm essentially trying to do is to add an amplifier to a simple passive radio receiver: simulate this circuit – Schematic created using CircuitLab XFMR2 consists of two inductors 0.4 uH ...
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5answers
114 views

What kind of tool is used to record a voltage over time to a PC file like a waveform?

I don't have any training but am doing some hobby electronics. I would like to record a change in voltage over time, sampled at around 100+ kHz. Ideally, I'd like to record around 20-30 min of two ...
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2answers
953 views

Negative voltage in Mesh Current Analysis

I am trying to learn about Mesh Current Analysis and have a question I was reading this explanation on the subject from electronics-tutorials.ws: http://www.electronics-tutorials.ws/dccircuits/dcp_5....
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3answers
448 views

Proper assignations of current directions

What is the best way to know the proper direction of current? Lets say we have this circuit below: The correct directions are given below: What are your techniques to know which is the proper way? ...
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1answer
87 views

DDRx timing analysis

I have a question regarding timing analysis for DDR3 and DDR4 signals. How do we do timing analysis to see if all setup and hold requirements are fulfilled correctly, considering they have write ...
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1answer
319 views

Can we use nodal analysis without any information about the current

I learned today Mesh Analysis and Nodal Analysis principe (with KVL and KCL) for a computer project and I am not certain about one thing. Can we use nodal analysis with only the voltage of the source ...
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1answer
101 views

How to calculate R,L,C on a bandpass filter?

As part of a project I'm doing for the class Signal and Systems Analysis, I'm given the following: With A=10, T=0.25ms and To=1ms. I am then asked to: After reading a lot, I think that I should ...
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3answers
71 views

meaning of having harmonic on special signal

my question maybe seems very simple but, I'm not familiar with the answer of that; what is the meaning of harmonic of the signal exactly? I know the harmonics of the signal are signals whoes ...
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53 views

What is these factor multiplying the current of the copper wires_?

I was reading some solved problems about transformers but I don’t understand how was calculated the losses in the copper. - Enunciate: A one phase, 10kVA, 2400/240, 60Hz distribution transformer has ...
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1answer
58 views

Using my sensor values, what are relevant data analysis techniques?

I am currently trying to devise a system using gyroscope+accelerometers placed in on a hat/cap in certain areas of the head (Front-left, Front-right, Centre, Back-left, Back-right). I want to create a ...