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.

David A. Johnson, PE     -   DiscoverCircuits
6601 County Road 6410    Lubbock, TX  79416-9717

Phone:  806-778-8407   
Office Hours: 9:00 am to 5:00 pm Central Time - please check your watch before you call

Email Dave       

NOTE :  Unless I am expecting an attachment,
I delete all emails with attachments.  
For the sake of your privacy,
your address will not be saved by me or sold.

History and Mission of Discovercircuits.com

From an early age, David A. Johnson, P.E., has always been passionate about electronics.  His tinkering began in his pre-teen years.  For the past 40 years he has been a successful consulting electronics engineer with experience in the areas of analog & digital design, electro-optics, RF and instrument design.  In 1998 he created a web site ImagineeringEzine.com to promote creativity and imagineering (a term coined by Walt Disney). 
On April 24, 2002 he launched DiscoverCircuits.com.  The site was born from the frustration produced by spending many hours searching for specific circuit designs from 100s of different website sources.  Since the beginning, Discover Circuits has attracted a steadily growing stream of both unique and returning visitors.  It has truly become a "one stop shop" for finding circuit schematics, components and links to other useful information.  
In the early months, the site featured circuits designed by Dave.  By May 19, 2002 the site linked to more than 2500 carefully categorized circuits.  Today it has over 45,000 links to designs by others and 4000 links to Dave's designs.   New circuits and/or links are added regularly as a resource for inventors, hobbyists, engineers, scientists and students.   Our goal is to help our visitors find quick solutions to electronic design requirements. 
We continually surf the net searching for viable links to specific electronic circuits, schematics, designs or diagrams.
David A. Johnson, P.E. is an electronics engineer   Many consultant's primary approach is to merely make recommendations.  Dave prefers to be a part of the team throughout the development process.  You will find that his approach is to take the next step to assist clients in implementing steps toward development of products, prototypes and/or procedures.  Electronics has been his vocation, hobby and passion.  Throughout his career, Dave's imaginative approach to design has resulted in applying new technologies in creative and cost saving ways. 

Note: DiscoverCircuits.com only sells Faraday Switches.   Unless specifically mentioned by name, David Johnson did not design the circuits listed on this site and will not be able to answer questions about them.   Please direct questions to the circuit's designer.

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