gurneet singh 5 volt supply

8/10/2019 Gurneet Singh 5 Volt Supply

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SWIFT INSTITUTE OF ENGINEERING ANDTECHNOLOGY

NAME: Gurneet Singh

TOPIC: 5 Volt power supply

MODULE: Z01SE

SUBMITTED TO: SUBMITTED BY:

Er. Kulveen singh Gurneet Singh


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Index

Topic Page No :-

Acknowledgement 1

Diagram 2

Circuit Diagram 3

Material used 4-8

Applications 9

Reference 10


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Acknowledgement

I take this opportunity to express my profound gratitude and deep regards to Er. Kulveen singh

for his exemplary guidance, monitoring and constant encouragement throughout the course of

this project. The blessing, help and guidance given by him time to time shall carry me a long

way in the journey of my life on which I am about to embark.

I also take this opportunity to express a deep sense of gratitude to Er. Kulveen singh, Swift

Institute of Engineering and Technology, which helped me in completing this task through

various stages.

I am obliged to staff members of Engineering Department, for the valuable information

provided by them in their respective fields. I am grateful for their cooperation during the period

of my assignment.

Yours obediently

Gurneet Singh


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Diagram

Description.

7805 is a 5V fixed three terminal positive voltage regulator IC. The IC has features

such as safe operating area protection, thermal shut down, internal current limiting

which makes the IC very rugged. Output currents up to 1A can be drawn from theIC provided that there is a proper heat sink. A 9V transformer steps down the main

voltage, 1A bridge rectifies it and capacitor C1 filters it and 7805 regulates it toproduce a steady 5Volt DC.


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Circuit Diagram


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Material used

Transformer

Transformers convert AC electricity from one voltage to anotherwith little loss of power. Transformers work only with AC andthis is one of the reasons why mains electricity is AC.

Step-up transformers increase voltage, step-down transformersreduce voltage. Most power supplies use a step-downtransformer to reduce the dangerously high mains voltage (230Vin UK) to a safer low voltage.

The input coil is called the primaryand the output coil is calledthe secondary. There is no electrical connection between the twocoils, instead they are linked by an alternating magnetic field

created in the soft-iron core of the transformer. The two lines inthe middle of the circuit symbol represent the core.

Transformers waste very little power so the power out is (almost)

equal to the power in. Note that as voltage is stepped downcurrent is stepped up.

The ratio of the number of turns on each coil, called the turnsratio, determines the ratio of the voltages. A step-downtransformer has a large number of turns on its primary (input)coil which is connected to the high voltage mains supply, and asmall number of turns on its secondary (output) coil to give a lowoutput voltage.

Transformer

circuit symbol

Transformer


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Diode

A diode is the simplest sort ofsemiconductordevice. Broadly speaking, a semiconductor is a material

with a varying ability to conduct electrical current. Most semiconductors are made of a poor conductor

that has had impurities added to it. The process of adding impurities is called doping.

A diode consists of a section of N-type material bonded to a section of P-

type material, with electrodes on each end. This arrangement conducts electricity in only one direction.

When no voltage is applied to the diode, electrons from the N-type material fill holes from the P-type

material along the junction between the layers, forming a depletion zone. In a depletion zone, the

semiconductor material is returned to its original insulating state -- all of the holes are filled, so there are

no free electrons or empty spaces for electrons, and charge can't flow.
http://electronics.howstuffworks.com/diode.htmhttp://electronics.howstuffworks.com/diode.htmhttp://electronics.howstuffworks.com/diode.htmhttp://electronics.howstuffworks.com/diode.htm


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Regulator

Voltage regulator ICs are available with fixed (typically 5, 12 and 15V) or variable output voltages. They

are also rated by the maximum current they can pass. Negative voltage regulators are available, mainlyfor use in dual supplies. Most regulators include some automatic protection from excessive current

('overload protection') and overheating ('thermal protection').

Many of the fixed voltage regulator ICs have 3 leads and look like power transistors, such as the 7805

+5V 1A regulator shown on the right. They include a hole for attaching aheatsinkif necessary.
http://www.kpsec.freeuk.com/components/heatsink.htmhttp://www.kpsec.freeuk.com/components/heatsink.htmhttp://www.kpsec.freeuk.com/components/heatsink.htmhttp://www.kpsec.freeuk.com/components/heatsink.htm


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Capacitor

Capacitor is a simple passive device. The capacitor is a component which has the ability or"capacity" to store energy in the form of an electrical charge producing a potential difference (StaticVoltage) across its plates, much like a small rechargable battery. In its basic form, a capacitor consists oftwo or more parallel conductive (metal) plates which are not connected or touching each other, but are

electrically separated either by air or by some form of insulating material such as paper, mica, ceramic orplastic and which is commonly called the capacitors Dielectric.

The conductive metal plates of a capacitor can be either square, circular or rectangular, or they can be of acylindrical or spherical shape with the general shape, size and construction of a parallel plate capacitordepending on its application and voltage rating.

When used in a direct current or DC circuit, a capacitor charges up to its supply voltage but blocks the

flow of current through it because the dielectric of a capacitor is non-conductive and basically aninsulator. However, when a capacitor is connected to an alternating current or AC circuit, the flow of thecurrent appears to pass straight through the capacitor with little or no resistance.


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Applications

1.For Mobile Charger

2.Camera battery Charger

3.Flasher Lights

4.Siren Relays.


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Reference

[1]http://www.trcelectronics.com/5-volt-power-supply.shtml

[2]http://www.circuitspecialists.com/24-volt-power-supply

[3]http://freecircuitdiagrams4u.blogspot.in/2010/01/5-volt-power-supply.html

[4]http://en.wikipedia.org/wiki/Mains_electricity_by_country

[5]http://www.electronicsteacher.com/tutorial/building-a-5-volt-power-supply.php
http://www.trcelectronics.com/5-volt-power-supply.shtmlhttp://www.trcelectronics.com/5-volt-power-supply.shtmlhttp://www.trcelectronics.com/5-volt-power-supply.shtmlhttp://www.circuitspecialists.com/24-volt-power-supplyhttp://www.circuitspecialists.com/24-volt-power-supplyhttp://www.circuitspecialists.com/24-volt-power-supplyhttp://freecircuitdiagrams4u.blogspot.in/2010/01/5-volt-power-supply.htmlhttp://freecircuitdiagrams4u.blogspot.in/2010/01/5-volt-power-supply.htmlhttp://freecircuitdiagrams4u.blogspot.in/2010/01/5-volt-power-supply.htmlhttp://en.wikipedia.org/wiki/Mains_electricity_by_countryhttp://en.wikipedia.org/wiki/Mains_electricity_by_countryhttp://en.wikipedia.org/wiki/Mains_electricity_by_countryhttp://www.electronicsteacher.com/tutorial/building-a-5-volt-power-supply.phphttp://www.electronicsteacher.com/tutorial/building-a-5-volt-power-supply.phphttp://www.electronicsteacher.com/tutorial/building-a-5-volt-power-supply.phphttp://www.electronicsteacher.com/tutorial/building-a-5-volt-power-supply.phphttp://en.wikipedia.org/wiki/Mains_electricity_by_countryhttp://freecircuitdiagrams4u.blogspot.in/2010/01/5-volt-power-supply.htmlhttp://www.circuitspecialists.com/24-volt-power-supplyhttp://www.trcelectronics.com/5-volt-power-supply.shtml

gurneet singh 5 volt supply

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