Media Kit has been online since 2002. 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. 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 is a vital resource for engineers, hobbyists, students, inventors & consultants. offers quick solutions to electronic design problems.

History of

David A. Johnson, P.E. has always been passionate about electronics.  In 1998 he created a web site promoting creativity and imagineering.  The site started with information of interest to Dave and other hobbyists, scientists and engineers.  It now with over 1000 pages which include:  sections covering creativity, inventing, electronics, the consulting professions, science and technology and much more.
On April 24, 2002 he launched  He felt that the time was right to develop a "on-stop" resource for all things relating to circuit design.  His goal was to link to as many specific circuits and resources on the Internet as possible.      
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 we more than 45,000 links.

 Always looking for more circuits & material to add to the site.

Got Designs?
Please eMail
if you want me to link to and/or post your original design Thanks.

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