Company research and business information tool for professionals in the semiconductor industry. Subscription-based.
http://www.semiconductorbrowser.com
Electronic circuits and projects designed by Tomi Engdahl. Audio, video, computer, data communication, light effects and controllers, power supplies, and telephone circuits.
http://www.hut.fi/Misc/Electronics/circuits/index.html
Cleanroom components and supplies list worldwide.
http://www.nanox.com/db/cleanroom/
Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English.
http://users.otenet.gr/~athsam
Gateway to a FTP archive of circuits.
http://www.ee.ualberta.ca/html/cookbook.html
Thomas directory for programmable control equipment, supplies and services.
http://www.programmable-controls.com/
High Powered Heliostat Array Concentrating Solar Collectors
http://www.redrok.com/
Articles covering the entire subject range of RF and wireless designs, design idea, technical articles and informative. All in PDF format.
http://www.amwireless.com/