On this site is kept free schematics diagram and service manuals of home and office electronic equipment, technicians advice on the repair of, useful reference information, repair tips and much more.

A Nonintrusive Appliance Load Monitor (NALM) is designed to monitor an electrical circuit that contains a number of devices (appliances) which switch on and off independently. By a sophisticated analysis of the current and voltage waveforms of the total load, the NALM estimates the number and nature of the individual loads, their individual energy consumption, and other relevant statistics such as time-of-day variations.

This is a site devoted to expanding the availability of circuit designs to engineering students, and even engineering professionals. The idea for this database came from Jerry Russell's search for circuit designs for guitar sound effects. The unavailability of such a widely available database sparked his interest in creating one.

A site to aid in the electrical engineering design process ...

Design notes and Circuits for electrical engineers and electronics enthusiasts ...

Site for the radio amateurs.

Trinary.cc is a non-commercial website that is dedicated to educating engineers about trinary algebra. It has tutorials, circuit schematics, links to expired patents, open source projects, free software, and more.

Dolby Digital ...