Electronics

word looked up :


	Electronics Electronics is the science and technology of electronic circuits[?] and devices such as thermionic valves and semiconductors using the physics of electricity. This knowledge is applied in devices that manipulate electric currents and electromagnetic fields for the controlling or processing of information, or the conversion and distribution of electrical power. While electricity had been used for some time to transmit data over telegraphs and telephones, the development of electronics truly began in earnest with the advent of radio. Today, electronic devices perform a variety of tasks. An electronic system can be divided into the following parts: Inputs - Electrical or mechanical sensors (or transducers), which take signals (in the form of temperature, pressure, etc.) from the physical world and convert them into current/voltage signals. Signal processing circuits - These consist of electronic components woven together to manipulate, interpret and transform the signals. Outputs - Actuators or other devices (also transducers) that transform current/voltage signals back into useful physical form. Take as an example a television. Its input is a broadcast signal received by an antenna or fed in through a cable. Signal processing circuits inside the television extract the brightness, colour and sound information from this signal. The output device is a cathode ray tube that converts electronic signals into a visible image on a screen. See also: transducer, microelectronics, optoelectronics, semiconductor, printed circuit board, wire wrap, point-to-point construction, integrated circuit, electrical engineering, computer engineering

Electronic Test Equipment

Ammeter, e.g. Galvanometer (Measure current)
Ohmmeter, e.g. Wheatstone bridge (Measure resistance)
Voltmeter (Measures voltage)
Multimeter (Measures all of the above)
Logic analyzer (Tests digital circuits)
Oscilloscope (Measures all of the above as they change over time)
Electrometer (Measures charge)

Interconnecting Electronic Components

electrical connectors, plugs and sockets etc.
printed circuit boards
integrated circuit
point-to-point construction
wire-wrap
breadboard

Active Components (solid-state)

Active Components (thermionic)

Electromechanical Sensors and Actuators

Analog circuits

Most analog electronic appliances, such as radio receivers, are constructed from arrays of a few types of circuits.

Digital circuits

Computers, electronic clocks, and programmable logic controllers (used to control industrial processes) are constructed of digital circuits. Digital Signal Processors are another example.

Mixed-signal circuits[?], also known as hybrid circuits, are becoming increasingly common. Mixed circuits contain both analog and digital components. analog to digital converters and digital to analog converters are the primary examples. Other examples are transmission gates[?] and buffers.

Noise

Associated with all electronic circuits is noise. Types of noise include

External links

Datasheets

Datasheet Search Engines

ChipDocs Datasheet Database: http://www.chipdocs.com/
Electronic DatabookShelf: http://www.crhc.uiuc.edu/~dburke/databookshelf.html
Global Electronic Datasheet Locator: http://www.datasheetlocator.com/
World of Electronics-Datasheet search: http://www.woe.onlinehome.de/

The Giant Internet IC Masturbator: http://www.falstaff.demon.co.uk/GIICM.html

Tutorials and Projects

Some other good sites

IEEE: http://www.ieee.org/
IEEE spectrum: http://www.spectrum.ieee.org/
Electronix Express: http://www.elexp.com/links.htm
Electronics Club: http://www.cc.iitk.ac.in/infocell/student/electronicsweb

Online courses

Electronics Club (http://www.cc.iitk.ac.in/infocell/student/electronicsweb) in IIT Kanpur,India

Yea, Richard, when I know; for I protest He hearkens after prophecies and dreams; And says a wizard told him that by G And, for my name of George begins with G, These, as I learn, and such like toys as these, Why, this it is when men.html">men are rul'd by women:-- My Lady Grey his wife, Clarence, 'tis she Was it not she and that good man of worship.html">worship, That made him send Lord Hastings to the Tower, We are not safe, Clarence; we are not safe. CLARENCE. But the queen.html">queen's kindred, and night-walking heralds Heard you not what an humble suppliant Humbly complaining to her deity I'll tell.html">tell you what,--I think it is our way, To be her men and wear her livery: Since that our brother dubb'd them gentlewomen, I beseech your graces both to pardon me; That no man shall have private conference, Even so; an't please your worship, Brakenbury, We speak no treason, man;--we say the king Well struck in years, fair, and not jealous;-- A cherry lip, a bonny eye, a passing pleasing tongue; How say you, sir? can you deny all this? BRAKENBURY. Naught to do with Mistress Shore! I tell thee, fellow, Were best to do it secretly alone. BRAKENBURY. Her husband, knave:--wouldst thou.html">thou betray me? BRAKENBURY. Forbear your conference with the noble duke. CLARENCE. We are the queen's abjects and must obey.-- And whatsoe'er you will employ me in,-- I will perform it to enfranchise you. Touches me deeper than you can imagine. CLARENCE. Well, your imprisonment shall not be long; Meantime, have patience. CLARENCE. Go tread the path that thou shalt ne'er return. .

On wordlookup.net

All is still licensed under the GNU FDL.
It uses material from the wikipedia.

navig stuff