WOLFRAM SYSTEM MODELER

LowPass

Low-pass filter

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.Analog.Examples.OpAmps.LowPass"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This is a (inverting) low pass filter. Resistance R1 can be chosen, resistance R2 is defined by the desired amplification k, capacitance C is defined by the desired cut-off frequency.

The example is taken from: U. Tietze and C. Schenk, Halbleiter-Schaltungstechnik (German), 11th edition, Springer 1999, Chapter 13.3

Note: vOut measure the negative output voltage.

Parameters (3)

Vin

Value: 5

Type: Voltage (V)

Description: Amplitude of input voltage

f

Value: 10

Type: Frequency (Hz)

Description: Frequency of input voltage

fG

Value: f / 10

Type: Frequency (Hz)

Description: Limiting frequency

Components (4)

ground

Type: Ground

Description: Ground node

vOut

Type: VoltageSensor

Description: Sensor to measure the voltage between two pins

firstOrder

Type: FirstOrder

Description: Lowpass filter operational amplifier circuit

vIn

Type: TrapezoidVoltage

Description: Trapezoidal voltage source