Here are some electronic circuits that I have designed and published. I have attempted to include a number of fairly unusual circuits, with an emphasis on useful applications instead of simple toy circuits. The majority of the circuits can be built with readily available discrete components. Only a few of the circuits rely on microprocessors. Micros can greatly enhance the power of a small circuit, but the specialized development tools can put the project out of reach of many hobbyists.
Other web pages have numerous circuits for LED blinkers, timers, miniature FM bugs and such, follow the links at the bottom of this page for examples.
Most of the circuits on this site have been drawn with an open-source circuit drawing program called xcircuit, xcircuit runs under both the Linux operating system and Windows. See below for links to the Xcircuit page and a review of the software.
Forrest Cook has some really neat circuit doodles on his webpage as well as awesome explanations of circuit implications and usages.
