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Repairing circuit board traces becomes necessary when a piece of trace is torn off or gets broken. This prevents the printed circuit board from functioning as it should. In order to be able to use the device that the board operates, these repairs must be done quickly. There are several different types of printed circuit boards and some of them are easier to repair.
Learn the 4 effective tips prevent the dangers of Christmas lights. This article provides the best methods to prevent Christmas lights from causing fire and other health risks.
This article is about an electronic game called X360. X360, x360 repair or Xbox 360 Repair can be searched.
Electrostatic Discharge (ESD) occurs when a circuit is created that allows electrons to rush from a statically charged body to another with an unequal charge. The electricity is released with a spark. The charge follows the path of least resistance, so it can occur between an electrical circuit ground, such as a doorknob or a computer chassis, and a charged body, such as a human hand. ESD can damage sensitive computer equipment.
LED (Light emitting diodes)
Light emitting diodes are components, which produces light when they are subjected to an electrical current or voltage. In other words they simply convert electrical energy into light energy. LED (Light emitting diodes) is similar to a PN junction diode. A PN junction diode can also emit light in response to an electric current. In LED (Light emitting diodes) the light energy is produced because holes and electrons are forced to recombine. When electron and holes rec...
Zener Diode voltage Regulator
As the zener diode is operated in the breakdown or zener region, the voltage across it is substantially constant for a large change of current through it. This characteristic permits it to be used as a voltage regulator. As long as input voltage Vln is greater than zener voltage V2, the zener operates in the breakdown region and maintains constant voltage across the load.
Full Wave rectifiers Vs. Bridge rectifiers
Full Wave rectifiers
Let take an example were the circuit employs two diodes D1 and D2 with centre tapped transformer. When the centre tap is grounded, the voltages at the opposite ends of the secondary are 180 degree out of phase with each other. During the positive half cycle of secondary, voltage at point A( Any Point in the circuit) swings positive with respect to ground O, the voltage at point B swings negative.
Half wave Rectifiers
Most type of electronic equipments require DC power source to operate. To get DC source, AC mains has to be converted into DC source. In order to provide this DC voltage source, one alternation is removed. The process used to remove this alternation is called rectification. The device used for rectification is called rectifier which converts the AC sine wave to pulsating DC voltage.
There are three types of rectifiers which are classified as follows:
Half wave Rectif...
Diode-Biasing :
Whenever diodes are used in electrical or electric circuits, they are subjected to various voltage and currents. The polarities and amplitudes of the voltage and current must be such that proper diode action takes place. We generally refer to the voltage applied to the semiconductor diode as bias voltage
Forward Bias :
In the previous discussion Junction Diodes, you saw that free electrons and holes, the majority carriers combine at the junction to produce a depletion region...
Junction Diodes
Now let\'s consider the action which takes place when semiconductors are combined to form a diode. Basically by joining N-type and P-type semiconductors a diode is created .When these opposite doped materials come in contact with each other, a junction is formed where they meet. Such diodes can be made of either Silicon or Germanium and are termed to as junction diodes.
P-N SemiConductor
A pure or intrinsic semiconductor can be doped with a pentavalent or trivalent material to obtain two basic type of semiconductor materials. These doped semiconductors are termed as N-type or P-type materials because the preponderance carriers within them are either electrons or holes respectively. The atoms within a semiconductor which contain extra electrons are negative ions possessing a negative charge.
P-Type Semiconductor
Doping pure semiconductor materials with a trivalent element, such as Gallium (Ga), causes some of the semiconductor tetravalent atoms to be displaced by trivalent atoms. Each trivalent atom shares its valence atoms with three adjacent atoms in the semiconductor crystal lattice structure. However, the fourth tetravalent atom does not share a covalent bond because of the missing electron.
N- Type Semiconductor
When a pure semiconductor material is doped with a pentavalent element such as arsenic (As), some of the atoms of the tetravalent semiconductor are replaced by As atoms. As atom has replaced one of the semiconductor atoms and is sharing four of its valence electrons with adjacent atoms in a covalent bond.
However, the fifth electron is not part of the covalent bond and can be easily freed from the atom. This As atom is called as donor atom because it donates a free electr...
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