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 solutions & design ideas.

Got Designs?
Please eMail
if you want me to link to and/or post your original design
NOTE:  We make every effort to link to original material posted by the designer. 
Please contact us if our link is not to your site!  Thanks.

DiscoverCircuits.com -- Hobby Corner
Last Updated on: Wednesday, June 02, 2021 03:48 AM

Hobby Circuits List

The contents & graphics of Discovercircuits.com are copyright protected.
LINK to Dave's circuit, but DO NOT COPY any files to your WEB SITE server



More  Charge Pump Circuits    Crystal Oscillators  
Infrared Circuits

40KHZ LED TEST SIGNAL GENERATOR
 

This 40KHz crystal controlled oscillator circuit drives an infrared LED with powerful 40ma pulses.  This hobby circuit can be used to test optical communications circuits, designed to receive 40KHz modulated light signals.

Click on Circuit Below to view PDF of Schematic


40KHz LED Test Signal Generatorr , Circuit designed by David A. Johnson, P.E. (March 12, 2002)

More  Charge Pump Circuits   
Crystal Oscillators  

Infrared Circuits

Hobby Circuits List
eMail David A. Johnson, P.E. about this circuit


HOME Schematics Index Hobby Corner Dave's Circuits Contact Info
Imagineering Ezine Dave Johnson & Associates Faraday Touch Switches


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

Copyright  January, 1998 - June, 2021     David A. Johnson  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.