# Questions tagged [gyrator]

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20 questions
95 views

### Simulated inductor for guitar use

Edit: Sorry! Please bear with me, this is my first post! Well, it seems that placing a buffer before certain fuzzes can chance their sound. However, placing an inductor after the buffer cancels this ...
36 views

### Find admittance( G ) matrix of a resistive circuit

I am taking Signals And Systems class where I have to calculate the admittance parameter of a given circuit. A given circuit for example: This is tedious and calculating the parameters takes so long....
87 views

### Gyrator Derivation

I am trying to understand the input impedance calculation of this Gyrator circuit from Wikipedia. The input impedance Zin is given as: I am having trouble deriving this. My first reaction was to ...
191 views

### Equivalent Inductor Equation (Antoniou Gyrator Proof)

I've been working on a proof for University and I've been able to understand most of what I was asked, but I'm having trouble understanding why is it that the equivalent inductor in an Antoniou ...
70 views

### Gyrator in matlab

I am new to matlab , i am trying to simulate a simple circuit to check my calculation I have done on paper. The circuit is the following, it has a gyrator and couple resistors.1 amp is flowing into ...
83 views

### Active inductor Circuit

I have created a series, shunt LC bandstop/notch filter. https://github.com/promach/frequency_trap/tree/development I am using gEDA with noqsi gnetlist backend and ngspice simulator However, I ...
198 views

### Is it bad to leave a filter capacitor floating?

The circuit detail presented is a gyrator filter that is one of two that hang out in the feedback loop of an opamp, creating a "low" and "high" tone control for audio. (The "low" section is shown) I'd ...
405 views

### Antoniou gyrator with op-amps, simple explaination?

I need to demonstrate that this circuit behaves like a gyrator: circuit Now, I made this new version of the image: edit If I apply KVL to the blue surface I find out that the voltage on the top ...
385 views

### Finding the input impedance of this gyrator

I'm having a little trouble with this. I'm supposed to show that the input impedance of this gyrator is $$\frac{R^2}{Z}$$ but the math just isn't working out. The gyrator consists of negative ...
471 views

### Finding Input Impedance of a Gyrator

I'm attempting to complete the question below. What I understand so far: The circuit can be modeled with an 'equivalent inductor' and gain stage (not sure if this models the whole circuit or just one ...
961 views

### pros and cons of replacing a passive inductor by a gyrator

I am studying the construction of some touch sensors, and I need inductances of 10mH, I know I can easily do it, and also purchase them without much difficulty, however I know that it is possible to ...
377 views

### My Chua's Circuit is flatlining (i.e., malfunctioning)

I tried to build a Chua Circuit, but it doesn't appear to be working as expected. The problem is that, while it's supposed to be an oscillatory circuit, I see no oscillations. Refering to the diagram ...
552 views

### Floating Inductor Simulation Using Only BJTs?

I know it is possible to replace large-ish floating inductors (~ 5mH) with a gyrator, typically using two opamps: What I've unsuccessfully tried to solve is : can we build something equivalent to the ...
1k views

### Equivalent inductance of this gyrator

According to this link, the following schematic is equivalent to an inductance R1*R2*C placed between input and ground. Under which conditions is this true? As a guideline, we assume Vcc=9V. See this ...
1k views

### How do I determine the inductance of a circuit using Op-amps, Capacitors and Resistors?

I am trying to prove that the inductance of a given circuit (between the source A, and ground) (see image below) is equal to (R1*R2*R4*C)/R3. Under the assumption that it is an ideal op-amp, I know ...
3k views

### Alternative to inductor on IC

I was running through the datasheet of CC2500 (Low-Cost Low-Power 2.4 GHz RF Transceiver) which has a dimension of ...
1k views

### What is a mutator?

I'm reading this paper by Chua on the memristor. He claims that Using a mutator, a memristor with any prescribed phi-q curve ...
417 views

### Sourcing parts for Really, Really low frequency filters

I'm doing a project at work that has a couple of esoteric requirements, particularly for a 0.1 Hz (0.07 Hz really, due to part availability limitations) Highpass filter (in the data acquisition system)...