WOLFRAM SYSTEMMODELER

Multivibrator

Multivibrator with Schmitt trigger

Diagram

Wolfram Language

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

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

This is a Multivibrator with Schmitt trigger according to:

U. Tietze and C. Schenk, Halbleiter-Schaltungstechnik (German), 11th edition, Springer 1999, Chapter 6.5.3

Parameters (7)

Vps

Value: +15

Type: Voltage (V)

Description: Positive supply

Vns

Value: -15

Type: Voltage (V)

Description: Negative supply

f

Value: 10

Type: Frequency (Hz)

Description: Desired frequency

R1

Value: 1000

Type: Resistance (Ω)

Description: Resistance 1 for adjusting the Schmitt trigger voltage level

R2

Value: 1000

Type: Resistance (Ω)

Description: Resistance 2 for adjusting the Schmitt trigger voltage level

R

Value: 1000

Type: Resistance (Ω)

Description: Arbitrary resistance

C

Value: 1 / f / (2 * R * log(1 + 2 * R1 / R2))

Type: Capacitance (F)

Description: Calculated capacitance to reach the desired frequency f

Components (7)

opAmp

Type: IdealizedOpAmpLimted

ground

Type: Ground

vOut

Type: VoltageSensor

r1

Type: Resistor

r2

Type: Resistor

r

Type: Resistor

c

Type: Capacitor