OP-AMP CONTROLLED SOURCES

BY:• DICIEMBRE, JOHN KEVIN B.

INTRODUCTION:

• Operational amplifiers can be used to form various types of controlled sources. An input voltage can be used to control an output voltage or current, or an input current can be used to control an output voltage or current.

APPLICATION:1. Voltage to Current

Converter2. Current to Voltage

Converter

TYPES OF CONTROLLED SOURCE:1.Voltage - Controlled Voltage Source (VCVS)2.Voltage - Controlled Current Source (VCCS)3.Current - Controlled Voltage Source (CCVS)4.Current - Controlled Current Source (CCCS)

VOLTAGE CONTROLLED VOLTAGE SOURCE (VCVS)

INVERTING OP-AMP NON-INVERTING OP-AMP

VOLTAGE CONTROLLED VOLTAGE SOURCE (VCVS)

INVERTING OP-AMP:

NON-INVERTING OP-AMP:

NOTE:• k = scale factor

VOLTAGE CONTROLLED CURRENT SOURCE (VCCS)

VOLTAGE CONTROLLED CURRENT SOURCE (VCCS)

OUTPUT CURRENT:

NOTE:• Iin = Iout

CURRENT CONTROLLED VOLTAGE SOURCE (CCVS)

CURRENT CONTROLLED VOLTAGE SOURCE (CCVS)

OUTPUT VOLTAGE:

CURRENT CONTROLLED CURRENT SOURCE (CCCS)

CURRENT CONTROLLED CURRENT SOURCE (CCCS)

SAMPLE PROBLEM

ANSWER