HEATKEYS

Texas Instruments (TI) is a global analog and digital semiconductor IC design and manufacturing company.

Electronic Ciruits portal of free electronic circuits, schematics, designs, or diagrams & other resources for engineers, inventors & students.

ESP - The Audio Pages. Professional results for the DIY enthusiast. Audio articles, projects to build and general information about hi-fi amplifiers, loudspeakers and audio in general.

Advanced Linear Devices Inc. specializes in low power precision linear integrated circuits and board level products; products include Electrically Programmable Analog Devices, MOSFETs, op amps, dual slope A/D front end converters, Digital Voltmeter b...

Microwave Journal

Descriptions of the various modules in a home built music synthesizer.

The Electrical and Computer Engineering Department at the University of Utah

Microwaves101.com - A practical resource covering all the fundamental principles of microwave design

GPS Tracking Systems

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Hobby Projects, a resource for Hobbyist, Engineers, Students, R&D Persons & Consultants, Electronic Projects, Electronic Tutorials, Microcontroller Based Projects, Microprocessor Tutorials, Schematics, Dictionary of Electronics Terms, Abbrevi...