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Acoustic Circuits / Schematics

An Acoustic Transformer Powered Super-High Isolation Amplifier - National Semiconductor Application Note

AN-285: An Acoustic Transformer Powered Super-High Isolation Amplifier - National Semiconductor Application Note

AN597: Implementing Ultrasonic Ranging - Microchip Application Note Published 26-Aug-97

Circuit for a Critter Ridder - Ultrasonic Sound Generator

App note: Implementing ultrasonic ranging on PIC16 microcontrollers

IR Detector/Emitter

Parking Sonar - This was one of my first designs: it is an ultrasonic parking sonar.  Based on an ultrasonic amplifier from an article seen on a 1982 magazine, it was once installed on the rear bumper of my Volvo Station Wagon. It served very well for many years. Connecting it to the reverse gear lights, it switches on automatically and shows you the distance to the nearest obstacle (according to his beam) on a led scale. When the last led lights, a buzzer is also activated telling you to stop immediately

Popular Electronics Ultrasound Detector

Ultrasonic Alarm - This alarm device transmits the ultrasonic and it confirms a reflected wave from the obstacle. If there is object within the set distance, it doesn't give the alarm. When there is no object within the set distance, it gives the alarm. The distance which can be set is from about 40 cm to 5-6 m. For example, when making a setting distance 5 m, it gives the alarm when the reflected wave from 40 cm to 5 m passes away.

Ultrasonic dog whistle

Ultrasonic ParK Controller - Are you afraid that your brand new Hummer is going to get scratched while parking it in a tight space?  Do you have trouble backing your large Mercedez S-class into your small garage?  Fear no more!  Our ultrasonic ParKontroller can sense how far you are away from the wall.

Ultrasonic Parking Assistant - The basic theory behind the Parking Assistant is the Sound Navigation and Ranging (SONAR) technique that is used for finding the distance and direction of a remote object underwater by transmitting sound waves and detecting reflections from it. First, a series of short ultrasonic pulses are transmitted using a transducer that changes voltage into sound waves. The transmitted pulse is reflected off an object, and the reflected wave is then received by another transducer that converts sound waves into voltage. The transmitted signal is also known as the ‘ping’ and the received signal is known as the ‘pong’. By counting the elapsed time between the ping and the pong, the distance between the device and an object can be easily calculated by multiplying the elapsed time with the speed of sound.

Ultrasonic Pest Repeller

Ultrasonic radar - This is a very interesting project with many practical applications in security and alarm systems for homes, shops and cars. It consists of a set of ultrasonic receiver and transmitter which operate at the same frequency. When something moves in the area covered by the circuit the circuit’s.

Ultrasonic Range & Imager - This is the electronic schematic of the homebuilt SONAR. Only one piezoelectric transducer is used for both transmit & receive. This transducer is switched from TX to RX via the four 4016 switches. A high gain amplifier stage & rectifier translates the received echoes into voltage pulses. The timing is controlled by the PIC12C508 8-pin microcontroller..

Ultrasonic Range Finder Circuit

Ultrasonic Range Finder uses Few Components - EDN-Design Ideas  (added 1/06) An ultrasonic, or sonar, range finder is a common sensor in robotic systems and industrial environments. Even home and automotive uses are possible. A novel sensor design consists of a WC, a few peripheral components, and a pair of ultrasonic transducers (Figure 1).

Ultrasonic Range Meter - This circuit is measuring the range to an object by using ultrasonic transmitter and ultrasonic receiver. The distance is calculated by PIC microprocessor and is displayed on the three digit 7-segment LED display.

Ultrasonic Remote Control and Alarm

Ultrasonic Sound Detector - Its Useful to hear Ultrasonic Sounds.

Ultrasonic Switch (Andrew Wilson) - The circuit described generates (transmits) ultrasonic sound of frequency between 40 and 50 kHz. As with any other remote control system this cirucit comprises of a mini transmitter and a receiver circuit. Transmitter generates ultrasonic sound and the receiver senses ultrasonic sound from the transmitter and switches on a relay.

Ultrasonic Transducer Oscillator Circuit - ASCII format

Ultrasound Detector

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