Fuente de voltage 5

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IRAPUATO GTO 19-Marzo-10

Sources(Fountains) of voltage of 5v

Objetive General : To develop a circuit to know his functioning and likewise to apply the concepts and exercises(fiscal years)realized in class.
Obtain one voltage of 5 volts.
Specific aim(lens): To learn to assemble a circuit of 5 v as well as different processes or stages that are carried out for the conclusion of this one.

Theoretical basis

Diode bridge
A diode bridge or bridge rectifier is an arrangement of four diodes in a bridge configuration that provides the same polarity of output voltage for eitherpolarity of input voltage. When used in its most common application, for conversion of alternating current (AC) input into direct current (DC) output, it is known as a bridge rectifier. A bridge rectifier provides full-wave rectification from a two-wire AC input, resulting in lower cost and weight as compared to a center-tapped transformer design.

A capacitor or condenser is a passiveelectronic component consisting of a pair of conductors separated by a dielectric. When a voltage potential difference exists between the conductors, an electric field is present in the dielectric. This field stores energy and produces a mechanical force between the plates. The effect is greatest between wide, flat, parallel, narrowly separated conductors.

A transformer is a devicethat transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core, and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or "voltage" in thesecondary winding. This effect is called mutual induction.

Voltage Source
A voltage source is any device or system that produces an electromotive force between its terminals OR derives a secondary voltage from a primary source of the electromotive force. A primary voltage source can supply (or absorb) energy to a circuit while a secondary voltage source dissipates energy from a circuit. An example ofa primary source is a common battery while an example of a secondary source is a voltage regulator. In electric circuit theory, a voltage source is the dual of a current source. Figure 1 shows a schematic diagram of an ideal voltage source driving a resistor load.

Light-emitting diode (LED), is an electronic light source. The first LED was built in the 1920s by Oleg Vladimirovich Losev, a radiotechnician who noticed that diodes used in radio receivers emitted light when current was passed through them. The LED was introduced as a practical electronic component in 1962.

Electrical resistance
Of an object is a measure of its opposition to the passage of a steady electric current. An object of uniform cross section will have a resistance proportional to its length and inverselyproportional to its cross-sectional area, and proportional to the resistivity of the material.

Transformador de 9 volts a 500 mA
2 voltage regulator one of 5 another of 12
2 capacitors
1 Electrolytic capacitor
2 resistance
rectificador of diodes
2 led


Lead was investigated as a voltage source on the Internet, was used to test the multisim if it resulted in thedesired voltage.

In obtaining the desired results began to weld all the elements.
Schematic of a power supply of 5 V


The transformer T1 is responsible, through the use of electromagnetic fields, convert the AC voltage of 120 V in another strain, also alternate, but 5 V (is a sign similar to sinusoidal input).

The bridge rectifier is composed of four diodes...
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