Technological World. Electrical Function An electrical function is the role that a component plays in the control or transformation of electric current.

Slides:



Advertisements
Similar presentations
Electricity Chapter 13.
Advertisements

Electrical Current & Circuits
Chapter 20 Electricity. Section 1 Electric charge and static electricity.
Ch.14 ELECTRICAL ENGINEERING. RELATES BOTH ELECTRICITY AND ELECTRONICS.
Week 3 Electrical Circuits and Components. It’s a Radio!
Chapter : 7 : Mains Electricity
Integrated Science I. Electrical conductors – a material that allows electrons to flow easily through it Ex) gold, silver, copper, etc. Electrical insulators.
Circuits are designed to control the transfer of Electrical Energy
Electrical Power Systems
Electricity.
ELECTRICAL ENGINEERING ELECTRICAL CONDUCTORS AND INSULATORS DISCOVERED.
Chapter 12 Electronics.
Electrical Engineering. A circuit is a combination of different components that allow electricity to flow through them. Each component serves its own.
Circuits 6-1.
 Covers two main areas:  - Electricity  - Electronics  All appliances and electrical devices depend on electrical circuits.
Electrical Functions 1.Power Supply Generates an electrical current in a circuit. Power Supply AdvantagesDisadvantagesExamples of Applications Battery.
By Carlin Bright. Electricity The flow of electrons in a conductor.
7.
Table of Contents Electricity.
CHAPTER 1 ELECTRICITY. ELECTRIC CHARGE Charges Exert Force Atoms are composed of particles with ­______. The law of electric charges states that like.
Circuits Series and Parallel. Series and Parallel Circuits  Circuits usually include three components. One is a source of voltage difference that can.
Electric Current And Power
14.4 CONDUCTION, INSULATION AND PROTECTION P
Static Electricity Electrical Charge: Is a concentration of electricity.
Electricity.
5.2: Circuits, Ohm’s Law, Electrical Power 2/6/13.
Chapter 17.3 – Circuits electric circuit – a set of electrical components connected such that they provide one or more complete paths for the movement.
Parallel wiring in the circuit breaker panel!. No matter which path the river takes, its change in elevation, from the mountaintop to the plain, is the.
AIM: How does a circuit work? DO NOW: Calculate the current produced by a 9volt battery through a resistance of 56.5 ohms? Show your work.
Physics I Honors 1 Current and Circuits Circuits Schematics Use of Meters.
20.3 Electric Circuits
Electrical Engineering CHAPTER 14. Electrical Engineering (404)  Electricity is all around us. It runs our homes, offices and schools.  Designing and.
Chapter 16.  Smallest particles of matter are called atoms  Electrons  Protons  Neutrons.
Electricity.
Electrical Safety Chapter 2 Section 6 Pages
Electricity Review Questions. How are charges transferred through conduction? By Direct Contact.
Power of Electricity Electricity: It’s SHOCKING!
CHAPTER 17 ELECTRICITY. ELECTRIC CHARGE Charges Exert Force Atoms are composed of particles with ­charges. The law of electric charges states that like.
SAMI MAKERSPACE MAKE: AN ELECTRONICS WORKSHOP. ELECTRICITY BASICS.
CONDUCTION, INSULATION AND PROTECTION. CONDUCTION Energy (eg. Electrical) transfer from one material to another by direct contact. Conductors are materials.
Good Day! 3/11/2016 Starter: What is electricity all about? How do we measure it? Starter: What is electricity all about? How do we measure it? Today.
 The unit used to measure the electrical current or flow of electrons through an electrical conductor or circuit.
Electrical Circuits Chapter 20 Section Three. Science Journal Entry #42 Expound upon Ohm’s Law and its relationship to current, resistance, and voltage.
Electricity & Magnetism. Electricity Electric charges are from protons+ which are positive particles and electrons- which are negative particles. Static.
Electricity. TYPES OF CIRCUITS Individual electrical circuits normally combine one or more resistance or load devices. The design of the automotive electrical.
Static Electricity Circuits Part Deux Safety In the House
Electrical Current & Circuits. Components of an electrical circuit Source of electrical energy (battery) A conductor of electrical energy (wire) Device.
11.3 OHM’S LAW AND ELECTRICAL SAFETY pp
Power supply Conduction, Insulation and Protection Control Transformation of Energy Other Functions.
Chapter 2; Lesson 2.1 T.O.C: Charge Needs a Continuous Path to Flow.
Electricity Unit. What is electricity? Electricity is the movement of electrons through something (“medium”) Electrons move for 2 reasons – They are attracted.
ELECTRICITY AND MAGNETISM
Electrical Current & Circuits
Moving electricity.
Unit 3 Lesson 3 Electric Circuits
Circuits.
Work Book / Text Book.
Electrical Current & Circuits
ELECTRICITY AND MAGNETISM
Introducing Current Electricity
Electricity 7-3 Circuits.
Electrical Current & Circuits
Electrical Current & Circuits
Unit 3 Lesson 3 Electric Circuits
ELECTRICITY AND MAGNETISM
Unit 2.4 Electric Circuits
The Safe Use of Electricity
ELECTRICAL ENGINEERING
Electrical Current & Circuits
Presentation transcript:

Technological World

Electrical Function An electrical function is the role that a component plays in the control or transformation of electric current.

Power Supply Power supply is the electrical function performed by any component that can generate or provide an electric current in a circuit. Battery Electrical Outlet Photovoltaic Cell

Batteries Batteries transform the energy from a chemical reaction into electrical energy. Advantages: Portability Disadvantages: Must be replaced after a certain amount of time Can contaminate the environment if not disposed of properly Applications: mp3 players, watches, remote controls

Electrical Outlet When the prongs of an electric plug enters an outlet, contact is made with parts permanently connected to an electrical network. Advantages: Stable & long-lasting power supply Hydro-electricity creates very little greenhouse gas Disadvantages: Appliances cannot be moved far from the wall outlet Appliances stop working in the event of a power shortage Applications: TVs, Fridges, Computers

Photovoltaic Cell Photovoltaic (solar) cells generate an electric current when exposed to light. Advantages: Can power equipment in isolated areas without access to power grids. Can also power portable or mobile devices Do not cause greenhouse gas emissions Disadvantages: Their operation depends on sunny conditions. Very expensive Applications: Solar homes, solar cars, calculators

Conduction Conduction is the electrical function performed by any component that can transmit electric current from one part of a circuit to another. Electricity is primarily conducted through wiring – usually copper. Components other than wires can also act as conductors. Ex: two pieces of metal that come into contact Ex: the human body

Printed Circuits A printed circuit is an electrical circuit printed on a solid support called a circuit board. Printed circuits have replaced copper wires for the purposes of conduction in smaller electronic devices such as cell phones and MP3 players. A printed circuit is usually a plastic board 1mm thick covered in a thin layer of copper. The circuit board is then etched and finally all the excess copper is removed leaving only the electrical circuit printed on the board.

Insulation Insulation is the electrical function performed by any component that prevents an electric current from flowing. Insulators are poor conductors so they prevent electrons from leaving wires. Plastics & ceramics make for good insulators.

Protection Protection is the electrical function performed by any component that can automatically cut current flow in the event of a power surge. If a short circuit or electrical overload occurs, in order to avoid serious accidents like fires or shocks and to avoid damaging plugged in appliances, protective devices such as fuses or breakers can be connected to the electrical circuits.

Fuses The electric current crosses the fuse through a conductive filament. If the current intensity exceeds a certain level, the filament melts and breaks, preventing the current from flowing through the fuse. The fuse then needs to be replaced.

Breakers In some breakers, the current passes through a bimetallic strip. Other breakers use an electromagnetic mechanism. When the current intensity exceeds a certain level, the strip becomes hot, it bends, and the connection is interrupted. In order to restore circuit operation, the breaker switch must be switched back. The breaker does NOT need to be replaced.

Resistance A resistor is a component designed to limit the flow of electrons through an electrical circuit. A resistor acts like a small-diameter pipe in a water supply system. Even if a large volume of water is present, the water flow will be restricted by the size of the small pipe. Resistors function in a similar way, by hindering the flow of electrons through a circuit.

Resistance Electrical resistance is expressed in ohms – represented by the Greek letter omega [Ω] Ex: Resistor ‘A’ has an electrical resistance of 2500Ω.

Resistance Resistance is usually indicated with a color code. The color of the first band corresponds to the first digit. The color of the second band corresponds to the second digit. The color of the third band corresponds to the multiplier. The color of the fourth band corresponds to the tolerance.

DIGIT GoldSilver MULTIPLIER TOLERANCE± 20%± 5%± 10% COLOR BLACKBROWNREDORANGEYELLOWGREENBLUEVIOLETGREYWHITEGOLDSILVER THE COLOR CODE FOR ELECTRICAL RESISTORS:

Resistance