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Ultrasonic Circuits
Ultrasonic (Ultrasound) Circuits:  #'s - R        S - Z

Last Updated on:
Thursday, November 30, 2017 10:28 AM


Circuits Designed by Dave Johnson, P.E. :

40Khz Ultrasound Receiver -  A X100 transistor Amplifier is followed by a zero cross detector circuit, using a voltage comparator. The output is a TTL logic signal, corresponding to the received 40KHz signal[. . . Circuit by David A. Johnson P.E.,  01/29/06]
 

40Khz Ultrasound Transducer Driver uses Medium Power -  This crystal controlled circuit drives a 40KHz piezo transducer with a 30v peak to peak signal[ . . . Hobby Circuit designed by David Johnson P.E.,  01/29/06]


Medium Power 40Khz Ultrasound Transducer Driver -  This crystal controlled circuit drives a 40KHz piezo transducer with a 30v peak to peak signal[. . . Circuit by Dave Johnson P.E.,  01/29/06]

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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

40Khz Ultrasound Receiver -  A X100 transistor amplifier is followed by a zero cross detector circuit, using a voltage comparator.  The output is a TTL logic signal, corresponding to the received 40KHz signal. . . Circuit by David A. Johnson P.E.-January, 2006

40Khz Ultrasound Transducer Driver uses Medium Power -  This crystal controlled circuit drives a 40KHz piezo transducer with a 30v peak to peak signal . . . Hobby Circuit designed by David Johnson P.E.-January, 2006

A Cheap Ultrasonic Range Finder -  Do you need to add a distance sensor to your embedded project ? Build this simple ultrasonic range finder !  This quick dirty PIC  ultrasonic range finder will find a place in numerous projects : presence detector, robotics, car parking, distance__ 

An introduction to acoustic thermometry -  04/21/11  EDN Technical Article: Use an ultrasonic transducer to measure air temperature in an olive jar.   __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

An Ultrasonic Parking Radar -  Build it and avoid those parking mishaps.__ SiliconChip

AN131 - An Introduction to Acoustic Thermometry -  Linear Technology AN131 __ Designed by Jim Williams - Apr 26th, 2011

Build a Large Ultrasonic Cleaner -  Most readers would know that you can obtain small ultrasonic cleaners for jewellery and similar small items.  So why not a much larger version? it would be great for cleaning automotive and other mechanical parts, fabrics which cannot be machine washed, ornate bric-a-brac and a host of other hard-to-clean items.__ SiliconChip

Build an Ultrasonic Proximity Detector -  Detect objects through ultrasonic sound waves. __ Contact Jameco Electronics

Cheap Ultrasonic Range Finder based on PIC16F877A with a 8MHz crystal -  Everybody knows the speed of the sound in the dry air is around 340 m/s.  Send a short ultrasonic pulse at 40 Khz in the air, and try to listen to the echo.  Of course you won't hear anything, but with an ultrasonic sensor the back pulse can be detected.  if you know the time of the forth & back travel of the ultrasonic wave, you know the distance, divide the distance by two and you know the range from the ultrasonic sensor to the first obstacle in front of it.   __ Designed by Bruno Gavand

Dog Whistle -  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 operating in the range of 30 to 50 kHz.   __ Designed by Tomaz Lazar-Ljubljana, Slovenia

Introduction to acoustic thermometry -  04/21/11  EDN Technical Article: Use an ultrasonic transducer to measure air temperature in an olive jar.   __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

IR Detector/Emitter -  This is a very basic infrared detector/emitter circuit.  One major downside of this circuit, is that ambient infrared light will interfere with its detecting obstacles __ Designed by Andy Wilson

Medium Power 40Khz Ultrasound Transducer Driver -  This crystal controlled circuit drives a 40KHz piezo transducer with a 30v peak to peak signal. . . Circuit by Dave Johnson P.E.-January, 2006

PIC16F873 Ultrasonic Range Meter -  On these pages, I will introduce the Ultrasonic Range Meter with PIC 16F873.  As for the range meter which doesn't use PIC , refer to "Ultrasonic Range Meter".  I created the PCB pattern for this circuit using EAGLE CAD.  With this circuit, the following features of PIC 16F873 are used.   __ Designed by Seiichi Inoue

Receiver-Ultrasonic Switch -  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 __ Designed by Andy Wilson


Ultrasonic (Ultrasound) Circuits:  #'s - R        S - Z


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