The RF CAFE - A collection of links to various application notes for different RF Vendors. Links to RF equations, technical data sheets, math notes, design ideas and useful RF design information. The Hardware Book - A collection of connector pinouts, cable and other hardware features, electronic circuits and tables. Don Lancaster Lair - Tutorials, resource bin, ezine columns, InfoPacks, annotated links. PlanetEE Portal - Ideas for design, reference, education, careers, events, Bob Pease column, discussion forums, products, literature. Registration required. Williamson Labs Electronic Tutorials - A collection of tutorials on electronics, from the basics to university level. Microwaves and RF Magazine - Articles and technical information about higher frequency RF. Design Notes - Design engineering information and resource site for engineers, students and hobbyists. DigitalFilter.com - Java Applets and Windows Applications to design/analyze digital filters, tutorials on digital signal processing, schematics. Technical Library - Information for the electronics experimenter from Wenzel Associates. Marc's Technical Pages - Features electronic ideas, circuits, and hints including radio, antennae, and articles. Rob's Electronics Site - Site dedicated to getting around the security bit of PAL/ GAL devices used in proprietary industrial electronics circuit boards. Spread Spectrum Magazine - Technical reference section. Mostly RF technical articles. Applied Radio Labs Design File - Technical articles and files on RF, radio and phase lock loops (PLL). RF Avenue Wireless Resources Directory - A collection of RF and microwave resources for wireless communication engineers. Includes tutorials, theory, design aids, circuit diagrams and products. Electronics Data Book - A near complete reproduction of Allied Electronics Handbook. Electronic formulas and charts. Scotts Guide to Electronics - An elementary guide to Electronics. Learn about components, circuits, and the use of electronics. High Frequency Electronics - An online and paper journal with information on analog, digital, RF, microwave, millimeter-wave and lightwave technologies. Circuit Exchange International - Electronic and radio schematics; circuit analysis, design and theory; freeware and shareware downloads. Electronics 2000 - Electronics technical data, interactive calculators, software downloads, forum, a beginners guide and links. SMPS Calculators and Reference - Power supply design information, electronics calculators and reference information. Penguin's Lab - Paul Peng's high voltage and other electronics related projects including Marx generator, Tesla coils, coilgun and pulse discharge. Electronics Point - Electronics discussion forum, including sections on hobby electronics, repair, audio and CAD. Ohms Law Calculator - Ohms law and other electronic calculators and charts. Basic Electronics Tutorials - Basic tutorials for students, teachers, beginners and hobbyists on digital and analogue electronics. Technick.net - Historical website with several guides and resources related to electronics hardware. EEWeb - Electrical engineering community for hardware designers: design tools, projects, articles, and discussions. Electronics Symbols & Electrical Symbols - Provides more than 800 electronic symbols classified into different categories. DAE Notes - Articles on electronics, electronic projects and a discussion forum. The Electricians Hangout - Basic electrical and electronics theory, information on National Electric Code, how to's and blog. Ekalk - A collection of interactive calculators for electronics designers, hobbyists and hams. The Resistor Guide - Technical reference to electrical resistors. Includes information about resistor materials, types, applications, and properties. Building Electronic Circuits - Articles, guides and tutorials on how to build electronic circuits. Topics for hobbyists include schematics design, printed circuit boards, soldering and other. Must Calculate - A collection of online electronics and electrical calculators. Lessons In Electric Circuits - A six-volume set of free downloadable books covering many aspects of electricity and electronics. Suitable for 2-year college use. Input-Data Acquisition System Design for Human Computer Interfacing - A tutorial on the theory and design of various types of sensors for Man-Machine interface.