This category is for sites that are related to the science and study of audio and video electronics. It is not for sites that manufacture or sell audio and video equipment. Sites that manufacture or sell audio and video equipment should be listed in the appropriate category elsewhere in the directory.

This category is intended for listings of sites that provide Electronic Design and Engineering information, and services. You will find chip design, transistor, circuit board and electronics system design houses. You will also find digital, analog, mixed signal, DSP, display, and fabrication houses. Electronic design consultants can also be found here. 04/04/00

All things concerning High voltage, Tesla coils, Van de Graff generators, sparks, and arcs. Be sure to look at the safety pages.

Power electronics is a particular field of engineering that deals with transfer of electric energy from a source to a load using electronics circuits. This category is for sites that provide useful information directly related to the design and analysis of power conversion circuits and topologies, applications of power electronics, control and regulation techniques, as well as active and passive power electronics components (IGBT, MOSFET, thyristors, diodes, transformers, inductors). It is specifically not intended for listing manufacturers and distributors of power supplies and electronic components as well as providers of engineering services, which should instead be listed in the appropriate business category such as: Business/Industries/Manufacturing/Electronics.

This category lists online publications (news and information websites, ezines, newsletters, etc) dealing with any aspect of electronics, including engineering, technology, components and the industry in general.

This category is for general electronics reference materials or materials that would apply to several different electronics topics. Some examples would be lists of formulae, theorems, online encyclopedias, and handbooks.

This category is for resource sites providing technical advice and information on the repair of electronic equipment and components and sites dealing with new technologies in the field of electronic repair. Product and service providers should submit their sites to the relevant categories in Business or Shopping which are shown in the Related Categories section of this category.

This category is intended to list centers, institutes and laboratories conducting research into areas related to electronic design, implementation or manufacturing.

This category is for sites specifically related to the technology of semiconductor electronics as a science. Submissions of sites dealing with manufacturing and production should be made to the appropriate subcategory elsewhere in the directory.

The theory and application of filtering, coding, transmitting, estimating, detecting, analyzing, recognizing, synthesizing, recording, and reproducing signals by digital or analog devices or techniques. The term "signal" includes audio, video, speech, image, communication, geophysical, sonar, radar, medical, musical, and other signals. {Thank you IEEE)

This category contains sites that have information on the theory and practice of testing electronics or electrical equipment. There will also be sites that contains tips, techniques, information, on the practice of measuring electrical and electronics quantities of all descriptions such as capacitance, inductance, frequency, current, power, voltage or resistance. Most vendor sites will be found in Business/Industries/Electronics_and_Electrical/Test_and_Measurement/. These would include sites from companies that sell manufacture, or distribute test equipment that measure the above quantities.