# 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.

27 questions with no upvoted or accepted answers
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124 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 ...
95 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 ...
181 views

### What is the best detection strategy for FSK and PSK demodulator

I am Modulating the bits using FSK and PSK modulators and sending them to the demodulator and the demodulator is using simple zero crossing detection to detect the bits. But the problem is, when I ...
370 views

### how to treat a diode in a transient analysis

Hi, this fig is a model of a circuit, where the cap is representing the gate-to-source capacitance of a hi-side FET in a bridge circuit driving a coil. VD is the intrinsic diode in the FET from Source-...
375 views

### I'm trying to determine the Thevenin voltage of a circuit using the node voltage method

I'm trying to determine the Thevenin voltage between the terminals a and b on this circuit: Notice that I've named the three essential nodes $v_1$, $v_2$ and $v_3$. I've highlighted the ground ...
154 views

### Not seeing set_address packet using USBTrace

I'm currently exploring the wonderous world of the USB Stack. I'm using a PIC18F2550 and the USB IO example available at www.moty22.co.uk. The code works as expected, but when using USBTrace (or any ...
681 views

### How to calculate resistor values for CFO differential amplifier Op-Amps?

I know that resistor calculations for current feedback amplifiers is different from their voltage feedback counterparts ( especially in higher frequencies as they have small impedance in inverting ...
38 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 ...
31 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 ...
19 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 ...
31 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 ...
166 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 ...
63 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 (...
35 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 ...
59 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 ...
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 ...
80 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 ...
51 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 ...
103 views

### Big Muff V7 Russian design problems?

I am trying to build this version of the Big Muff V7 on Eagle but can't seem to understand the schematic quite well. As you can seen on the image , there are couple 3 switches, sw 1a , sw 1b, and sw ...
405 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 ...
447 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 ...
43 views

### LED circuit analysis with PHY DP83822HF

I need help with the circuit analysis, specifically, if the LED frwd voltage range is 1.6V-2.1V and the power rail is 1.8V connecting to a 1.8V I/O, how can I figure out what amount of current (...
121 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 ...
47 views

### Nodal Analysis #1 - Where is my mistake?

I am given a problem with its shallow solution (i.e. not all steps/formulas shown). When I tackled the problem (below), my answer didn't match the apparently correct solution. Where is my mistake? The ...
52 views

### Nodal Analysis of Circuit

Given this circuit, we want to find V(t) or the equivalent D node circled. I set up the nodal analysis equations in the phasor domain as follows, with a super node at the dependent source. However,...