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Lab_5_2C_2009

Lab_5_2C_2009 - ECE 2C Laboratory Manual 5 Infrared PWM...

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1 © Bob York ECE 2C Laboratory Manual 5 Infrared PWM Receiver Overview In this lab you will construct the receiver circuit to complement the PWM transmitter board you assembled last week. This receiver detects, amplifies, and demodulates a 40 kHz PWM infrared signal. In the 1 st week you will construct the receiver circuit with some rudimentary testing. In the second week we will put together a complete system combining the microphone and amplifier circuits of Lab 1, and explore the limits of the system with respect to operating distances. Table of Contents Pre-lab Preparation 2 Parts List 2 Full Schematics for IR PWM Receiver 3 In-Lab Procedure 4 5.1 Detector/HP Filter Section 4 5.2 Signal Conditioning Circuit 5 5.3 Demodulation 6
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