Science students pls help me !!!!!!!!!?

Question

what do u know about diode n what is a diode?

Answer 1

In electronics, a diode is a two-terminal device ( thermionic diodes may also have one or two ancillary terminals for a heater).

Diodes have two active electrodes between which the signal of interest may flow, and most are used for their unidirectional electric current property. The varicap diode is used as an electrically adjustable capacitor.

The directionality of current flow most diodes exhibit is sometimes generically called the rectifying property. The most common function of a diode is to allow an electric current to pass in one direction (called the forward biased condition) and to block it in the opposite direction (the reverse biased condition). Thus, the diode can be thought of as an electronic version of a check valve.

Real diodes do not display such a perfect on-off directionality but have a more complex non-linear electrical characteristic, which depends on the particular type of diode technology. Diodes also have many other functions in which they are not designed to operate in this on-off manner.

Early diodes included “cat’s whisker” crystals and vacuum tube devices (also called thermionic valves). Today the most common diodes are made from semiconductor materials such as silicon or germanium.

Answer 2

It is a circuit element that allows electric current to flow one way through a device.

Answer 3

diode is a device made  up of semiconducter material lyk silicon,germenium etc with adding impurities lyk Al,P etc to increase +ve or -ve charge........so due 2 potential diff btwn tht 2, flow of electron occuers wich causes flow of current...if lyk my ans,,Mail me at [e-mail]...............

Answer 4

A diode is a (usually solid state) device that allows an electrical current to flow in one direction and not in the other.

Answer 5

A diode is a semiconductor device that converts alternating current to direct current.

Answer 6

its a positive end of the battery

Answer 7

Start at Wiki:

http://en.wikipedia.org/wiki/Diode

Answer 8

diode is a semiconducter device.it is use to rectifier the voltage n current

Answer 9

diode is a semiconducter device.which is made from silicon or ge n other .it is use to rectifier the voltage n current.

Answer 10

A diode is a specialized electronic component with two electrodes called the anode and the cathode. Most diodes are made with semiconductor materials such as silicon, germanium, or selenium. Some diodes are comprised of metal electrodes in a chamber evacuated or filled with a pure elemental gas at low pressure. Diodes can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal mixers, signal demodulators, and oscillators.