WOLFRAM SYSTEMMODELER

DifferenceAmplifier

Simple NPN transistor amplifier circuit

Diagram

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SystemModel["Modelica.Electrical.Analog.Examples.DifferenceAmplifier"]
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Information

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

It is a simple NPN transistor amplifier circuit. The voltage difference between R1.p and R3.n is amplified. The output signal is the voltage between R2.n and R4.n. In this example the voltage at V1 is amplified because R3.n is grounded.

The simulation end time should be set to 1e- 8. Please plot the input voltage V1.v, and the output voltages R2.n.v, and R4.n.v.

Reference:

Tietze, U.; Schenk, Ch.: Halbleiter-Schaltungstechnik. Springer-Verlag Berlin Heidelberg NewYork 1980, p. 59

Components (23)

V1

Type: ExpSineVoltage

V2

Type: RampVoltage

I1

Type: RampCurrent

R1

Type: Resistor

R2

Type: Resistor

R3

Type: Resistor

R4

Type: Resistor

C1

Type: Capacitor

C4

Type: Capacitor

C5

Type: Capacitor

C2

Type: Capacitor

C3

Type: Capacitor

Gnd1

Type: Ground

Gnd9

Type: Ground

Gnd3

Type: Ground

Gnd2

Type: Ground

Gnd6

Type: Ground

Gnd7

Type: Ground

Gnd8

Type: Ground

Gnd5

Type: Ground

Gnd4

Type: Ground

Transistor1

Type: Transistor

Transistor2

Type: Transistor