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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, October 24, 2017 03:04 PM

List of Dave's Circuit Designs

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY CONTENT to your WEB SITE server!



Piezoelectric (Piezo) Circuits
 
Circuits Designed by David Johnson, P.E. :

Piezoelectric Beeper that is Very Loud

Piezoelectric Device used for Motion Alarm

Piezoelectric Tap Switch

Piezoelectric Triggered Switch

Piezoelectric Vibration Sensor Activates Switch

Piezoelectric Water Flowing Indicator

Solar Path Light Improvement

Sound Generator-Clicking

Still Another Very Loud piezo Alarm Beeper

Switch activated by Piezo Vibration

Tap Switch uses a Piezo Wafer

Three-Volt Powered Very Loud Beeper

Ultra Low Current 3v LED Flasher #8

Very Loud 3v Powered Beeper

Very Loud Beeper Circuit

Very Loud Pulsating Beeper

Water Flowing in Pipe Indicator
3v Powered Loud Beeper

Alarm-Piezo Device Detects Motion

Beeper that is Very Loud

Click Sound Generator

Finger Tap Piezo Relay

High Sound Output Beeper

Hour Meter triggered by Machine Vibration

Improved Solar Path Light

Machine Vibration Triggers Hour Meter

Motion Alarm using piezo Device


 

Hobby Circuits by Category

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Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches



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