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.

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DiscoverCircuits.com has been online since 2002.

DiscoverCircuits.com is a portal to free Electronic Circuits/Schematics which are careful cross-referenced into a wide range of categories.   These categories include amplifiers, power supplies, solar, computer interface, music, TV/radio, robotics and many more.  Click here for a complete list of categories. 

DiscoverCircuits.com includes a collection of circuits designed by David A. Johnson, P.E. (founder of website.)
Links to 45,000+ circuits found online + an Electronic Resources section

DiscoverCircuits.com is a vital resource for engineers, hobbyists, students, inventors & consultants.
DiscoverCircuits.com offers quick solutions to electronic design problems.

Payment Terms


The rates quoted are introductory rates and will be available for a limited time.  Acceptance of ads is based on availability. 

Contact us for an insertion order to assure availability of space.

All ads at Discovercircuits.com are to be:

  • Paid via check (payable to "David Johnson")

  • Scheduled for a contracted period of time.

  • Ads for a single will be posted on the agreed upon date after payment is received.

  • Advertiser with extended contracts are invoiced monthly.

  • Advertiser will provide the graphics

  • Ads can be either served from:

    • our server or

    • directly linked to yours or

    • third party server


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