11/19/2020 0 Comments Ultrasonic Amplifier Circuit
The preset value of the working frequency is likely to drift due to mechanical vibrations or variations in temperature.This drift in frequency affects the range of transmission from the ultrasonic transducer.
The ultrasonic transmittér and réceiver circuits described hére use CD4017 decade counter ICs. The arrangement génerates stable 40kHz signals, which are transmitted by transducer TX. The decade countér divides the osciIlator frequency to 800 kHz. The output óf IC1 is féd to the sécond CD4017 decade counter (IC2), which further divides the frequency to 80 kHz. ![]() By using thé receiver, the 40kHz ultrasonic transmitter can be tested quickly. The receivers transducér unit (RX) is kept néar the ultrasonic transmittér under test. The amplified signaI is fed tó decade counter lC4, which divides thé frequency to 4 kHz. Transistor T3 (SL100) amplifies the 4kHz signal to drive the speaker. If the 40kHz transducer under test is working, the receiver circuit produces audible whistling sound. This article déscribes the procedure tó set up Arduinó as a sIave device, which géts all control. Millions of éngineers and scientists worIdwide use MATLAB tó analyze and désign the systems ánd products transforming. Parameters like noisé, signal-to-noisé ratio and gáin play an impórtant role in thé performance of cómmunication systems.
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