Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 45,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


Circuits designed by David Johnson, P.E.
Last Updated on: Friday, December 29, 2017 02:53 AM

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 Dave Johnson, P.E. :

High Sound Output Beeper

Machine Vibration Triggers Hour Meter

Motion Alarm using piezo Device

Piezoelectric Beeper that is Very Loud

Piezoelectric Tap Switch

Piezoelectric Triggered Switch

Piezoelectric Vibration Sensor Activates Switch

Solar Path Light Improvement

Ultra Low Current 3v LED Flasher #8

Very Loud 3v Powered Beeper

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


 

Dave's Circuits

Hobby Circuits

eMail:
  David A. Johnson, P.E. about these circuits

 


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy


Copyright  January, 1998 - December, 2017     David A. Johnson & Associates.  All Rights reserved. 


 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.