Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [non-linear]

117 questions
18
votes
6 answers

Why do these two sets of seemingly identical capacitors behave differently?

I have two sets of almost identical-looking capacitors which show different behaviour: The ones on the left (which are definitely these MLCCs) act as I would expect, but the ones on the right (which we think were a previous order of the same but…
llama
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9
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Simulating Chua's circuit in LTspice with a saturating transformer-based nonlinear resistor

Chua's circuit is one of the simplest circuits known to exhibit chaotic behavior. It consists of resistors, capacitors, an inductor, and an active nonlinear resistor. One implementation of this nonlinear resistor is given in the figure below of…
Vivek Subramanian
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6
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1 answer

Non linear inductor in LTspice

I am trying to construct a non linear inductor in LTspice and have a question regarding the two plots provided below. In the first image current is swept from -30A to 30A in steps. The result yields the required behavior where the initial inductance…
Rr Bb
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4 answers

How can I realize this nonlinear resistor?

I want to know if it's possible to realize a circuit described by the equation $$I = \sin(w V)$$ where \$I\$ is the current, \$V\$ the potential and \$w\$ a variable which characterizes the single circuit.
Antonio Sannia
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6
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2 answers

If there exists a cascade of op amps, does the previous op amp's slew rate affect the later op amp's slew rates?

All op amps used are the same Texas Instrument LM348n. The datasheet says the op amp has a nominal slew rate of 0.5 V/µs, but gives no tolerance. I have a square signal with an amplitude of 500 mV peak to peak being sent into a two op amps system.…
Jonathan Riley
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6
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1 answer

Nonlinear equation solvers in SPICE simulators

We have an assignment at the Parallel processing class, the target is to implement a Non-linear Equations solver on cuda based on Newton Raphson method and to interface this solver with an application that deals with nonlinear set of equations. We…
Elbehery
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2 answers

Transformer with hysteresis in LTspice

I would like to model a transformer in LTspice with hysteresis and saturation (or just hysteresis would be nice). I have already tried the Chen model which I don't like and tried to model a regular transformer with the inductor parameters found here…
Voltage Spike
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How can A/D conversion perform linearization of nonlinear I/O behavior of sensor recordings?

Usually we use Taylor series expansion while taking just the first few terms in the process of linearizing a nonlinear data of sensor recordings. However, another method exists which involves A/D conversion in particular as a discretization. I wish…
SPARSE
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4
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2 answers

Determine the output voltage

I'm trying to solve the following question: Determine the output-tuned circuit voltage in Fig. 4.P-7. The tuned circuit is resonant at \$\omega_0\$ and has \$Q_T = 20\$. My try: I don't know how to apply KVL and KCL correctly. Solving for DC:…
S.H.W
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4
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2 answers

When a signal has an interharmonic, is the signal periodic or non-periodic?

I have some questions regarding interharmonics. What I'm going to do is first ask just a few, and then as people answer them I would expand this post or create a new question. Harmonics are sinusoids that have a frequency which is an integer…
alejnavab
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2 answers

What are those nonlinear loads in real microgrids/grids?

I have read in literature that nonlinear loads can impact on the operation of the so called microgrids. However, when I heard nonlinear loads I think in electronic devices such mobile phones or computers, but it seems to me that those loads are not…
Bur Nor
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4
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1 answer

How Exactly Does a Push-pull Pair Cancel Even Harmonics?

I've been studying cassette tape circuits recently and the same bias oscillator circuit keeps cropping up time and again. This one from a copy of Practical Electronics (circa 1960): ...and this one from an Aiwa cassette player circuit from the…
Buck8pe
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1 answer

How to even start solving multi-diode problems?

For example, in the circuit below there are 5 diodes constant-voltage-drop diodes, I could have 2^5 circuits to solve. Is there something I'm not paying attention to, that would greatly simplify this problem? PS: The S1 switch is closed. Problem is…
Leon Held
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1 answer

LTSpice light bulb nonlinear current

I'm in a lab and for some reason I cannot replicate my results on LTSpice. I have gathered data from an experiment where I built the circuit shown in Figure 1. I then took that data, plotted it in Excel and found the polynomial trend line, see…
sam
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Linearizing hall effect sensors outputs

I'm trying to find a robust solution to linearize four hall effect sensors outout to obtain a signal that I can use in a PID control scheme. The output data is collect via 4 ADC channels on an ATmega328p chip (Arduino) by sliding a magnet with the…
Sorenp
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