Modeling Voltage| Variable Capacitors

The Design Center Source newsletter, April 1992. Some of our customers have asked how to model a voltage- variable capacitor. The example circuit file shown ...

Modeling Voltage-Controlled Resistors and Capacitors in PSpice

In this application note, we will illustrate the usage of voltage controlled impedance for controlling Q of a series RLC filter network and changing the ...

Modelling a variable (i.e. nonlinear) capacitor in Simulink - MathWorks

I am modelling a variable capacitor, which is described by the following nonlinear equation: . To implement this, I have been taking the standard approach.

Modeling Varactors - Designer's Guide Community

Modeling nonlinear capacitor, charge conservation, Verilog-A. ... FIGURE 3 Capacitance as a function of voltage measured using simulation.

The engineer's guide to varactor diodes (voltage variable capacitors)

In contrast, the capacitance of a varactor diode is controlled by a reverse bias voltage. Since the controlling voltage can be applied ...

Efficient Nonlinear Behavior Modeling Method for Voltage-Variable ...

Abstract: A voltage-variable capacitor is an essential part of the matching element in radio frequency (RF) circuits, including the ...

Variable Capacitors: A Complete Guide - Blikai

A variable capacitor is a capacitor whose power capacity can be adjusted within a certain range. It is widely used in electronic technology.

Discrete variable capacitor - Simulink - MathWorks

The capacitance value can be negative. When you use a Variable Capacitor block in your model, set the powergui block Simulation type to Discrete and select ...

How to make a capacitance variable with voltage in LTpice?

The value of a parameter must be known before the simulation begins. A parameter can be .step'ped, but each step is a new simulation.

Creating a variable capacitor - Custom IC Design

I am trying to model a triboelectric harvester and I need a variable capacitor for that. To be more specific, I need to model a sinusoidal movement.

Variable capacitor - Encyclopedia Magnetica

Variable capacitance can be created by using the LTspice in-built variables for capacitors: Q Q - electric charge (C), and x x - voltage across ...

Introduction to SPICE models of variable/controllable capacitors and ...

An intuitive explanation of the derivation of SPICE models for variable capacitors and inductors.

How to create variable capacitors for advanced parameterized studies.

Following the adaptations of variable resistors and inductors within PSIM, this article focuses on the creation of a variable capacitor ...

How to Use LTspice Simulations to Account for the Effect of Voltage ...

Direct evaluation of a nonlinear capacitance model is unsuitable due to the required charge retention. This should not be a problem here because the capacitance ...

Basic knowledge about variable capacitors

The capacitance value of a variable capacitor is altered by applying a voltage. By making use of this property, optimum characteristics can be obtained in ...

How to model a variable capacitor with capacitance versus rotation ...

You would model it as a capacitor whose capacitance is a function of rotation angle, C = k * (theta) + C0 where C0 is the minimum ...

Capacitor Model - eCircuitcenter

These subcircuits model a capacitor's self-resonant and series resistive behavior. More complex models can be created that mimic other non-ideal behaviors.

A variable capacitance based modeling and power capability ...

An improved ultracapacitor model based on variable capacitance is proposed, where the main capacitance varies with voltage according to a piecewise linear ...

A comprehensive user-friendly simulation model of ceramic capacitors

Relevant references Zeltser and S. Ben-Yaakov, "On SPICE Simulation of Voltage-Dependent Capacitors," in IEEE Transactions on Power ...

Capacitor model that depends on voltage - LTspice - Groups.io

The essence is to model the capacitor as a current source: i=C*dV/dt and use the lookup table to curve fit capacitance with the voltage across it.