Operational Amplifier Applications Unit 1 – Introduction to the Circuit Board
UNIT 1 – INTRODUCTION TO THE CIRCUIT BOARD
UNIT OBJECTIVE
At the completion of this unit, you will be able to locate and identify the major components on
the OPERATIONAL AMPLIFIER APPLICATIONS circuit board.
UNIT FUNDAMENTALS
The OPERATIONAL AMPLIFIER APPLICATIONS circuit board consists of 6 training circuit
blocks:
• INTEGRATOR
• DIFFERENTIATOR
• LOW PASS FILTER
• HIGH PASS FILTER
• BAND PASS FILTER
• FULL-WAVE BRIDGE DRIVER/CONVERSION
Each circuit block is designed around an LF441 integrated circuit operational amplifier (op amp).
The schematic symbol for an op amp is shown.
Each op amp is installed in a plug-in DIP socket. This makes it easy to replace the op amps if
they become damaged.
The circuit board provides an ATTENUATOR circuit block for use with input signals whose
amplitude is too large for the test circuits.
Attenuation is a reduction of a signal's amplitude. In this circuit, the attenuation factor is 11:1
based on the resistor ratio of 470Ω to 47Ω.