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Ultrasonic Circuits


An ultrasonic level or sensing system requires no contact with the target. For many processes in the medical, pharmaceutical, military and general industries this is an advantage over inline sensors that may contaminate the liquids inside a vessel or tube or that may be clogged by the product.

A common ultrasound application is an automatic door opener, where an ultrasonic sensor detects a person's approach and opens the door. Ultrasonic sensors are also used to detect intruders; the ultrasound can cover a wide area from a single point.

The flow in pipes or open channels can be measured by ultrasonic flowmeters, which measure the average velocity of flowing liquid. Ultrasonic Aplications includes motion sensors and flow measurements, non-destructive testings, ultrasonic range finders, ultrasound Identification (USID), imaging, acoustic microscopy, biomedical applications, ultrasonic cleaning, ultrasonic humidifiers, etc.


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It's well known that many animals are particularly sensitive to high-frequency sounds that humans can't hear. Many commercial pest repellers based on this principle are available, most of them oper...

This pre-assembled sensitive ultrasonic motion detector circuit uses a quartz crystal to lock the detector frequency for maximum stability and reliabi.

Electronic circuit boards need to be cleaned because dust and moisture can prevent it from working out properly. This is the reason why most electronics that don't work are cleaned first before rep...

Secondly an ultrasonic wave transmitter consists of IC3/1, IC3/2, IC3/3, C15, R27, R28 and VR4. They IC3/2 and IC3/3 are oscillator generator circuit with frequency about 40 Khz, then they is ampli...

Explaining the difference in two Branson Ultrasonic Cleaners ( CPX1800 & CPX1800H ) and why we need to use ultrasonic cleaners for electronic circuit board repair and assembly. Posted on November 2...

Ultrasonic PCB cleaning

Ultrasonic Humidifier Circuit for Nebulizer, Atomizer & Fogger

Ultrasonic Cleaning More Than You Think

ultrasonic sound generator (3-4 W) with tweeter (schematic)