Rd 3 - Electronics 1.Ohm’s Law 2.Potential Divider 3.Resistor in Series and Parallel - Application of Ohm’s Law 4. Switches and Relay.

Slides:

Advertisements

Similar presentations

Basic Electronics.

Advertisements

AS Level Electricity - Circuits

Circuits & Circuit Diagrams

Fair Use Building and Research Labs Presents

Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. In this lesson you will learn: How a potentiometer works as a variable resistor and a voltage divider.

Chapter 1 Quick review over Electronics and Electric Components Prepared By : Elec Solv.

Physics and Electronics. Electronic systems Electronic systems are made up of 3 parts: 1)An INPUT SENSOR – these detect changes in the environment Examples:

1 DC ELECTRICAL CIRCUITS OHMS LAW. 2 DC ELECTRICAL CIRCUITS Ohms law is the most important and basic law of electricity and electronics. It defines the.

CIRCUIT TYPES PHYSICS UNIT E. CIRCUITS Need a source of energy, a pathway for electrons, and something that uses energy. Ex) Sources: Battery, 120 V plug,

Circuits  Electricity flowing through a substance is called an electric current.  A circuit is a path through which electricity flows from a negative.

Current Electricity.

Teaching note Just in case you have never tried this before. This is split into 6 spaced learning presentations. The idea is that each one is presented.

Electricity and Magnetism Topic 5.2 Electric Circuits.

Electronic component identification In order to identify electronic components from diagrams and data sheets and then select the appropriate electronic.

Electric Currents Topic 5.2 Electric Circuits. Electromotive Force Defining potential difference Defining potential difference The coulombs entering a.

CHAPTER 7 ELECTRICITY BINGO. A circuit in which current has more than one path is called a _________________ circuit.

Rd 3 - Electronics 1.Ohm’s Law 2.Potential Divider 3.Resistor in Series and Parallel - Application of Ohm’s Law 4. Operational Amplifier (Comparator and.

Conductors Metals and graphite are electrical conductors. Electrons are free to move in conductors. Electrons are negatively charged. The electrons carry.

Electric Current Electrical current is the flow of electrons. Unlike static electricity, charges are in motion. Two types of Current I. Direct current.

Concurrent Assessment DC Electronics 1 1.When you have a complete series circuit, is the current flow the same at every place in the circuit? 2.What is.

Current Electricity. Why did the electron cross the road? Or, why do electrons move in the wire when terminals are connected?

Circuits and Ohm’s Law Objectives: 1. Gain an understanding of Ohm’s Law. 2. Compare and contrast the movement of current through a series and parallel.

describes the relationship between current, voltage, and resistance greater the voltage across a device with resistance, the greater the current through.

Electricity 2 Thomas Edison Lesson Objectives I know some circuit symbols for common components. I know what is meant by resistance I know.

Basic Electronic Components.  An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons.

Electronics Speaker Project Mr Sanders.

35 Electric Circuits Electrons flow from the negative part of the battery through the wire to the side (or bottom) of the bulb through the filament inside.

Temperature Sensing Temperature Bar Graph Project National Electronics Museum November 12, 2011 National Electronics Museum.

Electricity It’s Shocking!!. Current Electricity Current Electricity is a constant flow of electrons through a circuit. There are three main parts to.

School of Physics and Astronomy How to make a dark detecting torch Chris Staddon – Senior Experimental Officer & Outreach Officer Michael Forrester – Student.

Electric Circuits. Electric circuit: a complete path from the positive terminal to the negative terminal.

5.2.2 D.C. Circuits Practical circuits Electromotive force and internal resistance Kirchhoff’s laws Series and parallel arrangements Potential divider.

Physics 12 Circuits 6 – Basic Complex Circuits Mr. Jean.

Electronics for Physical Computing Materials: capacitor, diode, LED, transistor, switch,resistor, relay, proto board, multimeter.

Introduction to Electronic Circuits Khansaa Almansor.

Electric Circuits and Electric Current  A flashlight, an electric toaster, and a car’s starting motor all involve electric circuits and electric current.

6.2 ELECTRONICS. CAPACITOR An electrical device used to store electrical charge.

TECHNOLOGIES ESO 4 UNIT 1: ELECTRICITY AND ELECTRONICS ANALOGIC ELECTRONICS (PART 1)

Electric Circuits Chapter Notes. Electric Circuits Any path along which electrons can flow is a circuit A gap is usually provided by an electric.

Class Parts List Breadboard 1 Wire kit 1 Red LEDs 3 Green LEDs 3 Yellow LEDs 1 Photoresistor 1 xPiezo sensor 1 Button 3 Slide button, switch 1 Reed switch.

Determining Equivalent Resistance

Current Electricity.

Series Circuit.

Fair Use Building and Research Labs Presents

Potential Divider Aims What is a potential divider

Series Circuit – 1 bulb Series Circuit – 1 bulb.

Transistor & Voltage Divider

ELECTRICAL CIRCUIT BOARDS

Circuits Chapter 35.

Series and Parallel Circuits

Resistance AIM: Understand resistance, calculate resistor values and know the characteristics of different types of resistors PRIOR KNOWLEDGE: Understand.

Ohm’s Law The relationship between voltage, current and resistance is known as Ohm’s Law: V = IR Voltage (V) = Current (I) x Resistance (R) Volts.

Basic Electronics Part Two: Electronic Components.

Fair Use Building and Research Labs Presents

Relay, Optoisolator, and Stepper Motor Interfacing

THE RESISTOR Forward characteristic Reverse characteristic Circuit.

Relay, Optoisolator, and Stepper Motor Interfacing

AS Level Electricity - Circuits

Relay, Optoisolator, and Stepper Motor Interfacing

P2 - Physics Circuits.

Electronic systems 7.

Voltage, Current and Resistance

Physics Circuit Types.

Presentation transcript:

Rd 3 - Electronics 1.Ohm’s Law 2.Potential Divider 3.Resistor in Series and Parallel - Application of Ohm’s Law 4. Switches and Relay

Darlington Pair A special arrangement of two transistors (often called a Darlington Pair) is shown in the diagram opposite. There are number of situations in which we might make use this configuration. What are the advantage of using an arrangement such as this? (1) It is much more sensitive (2) The TIP121 is a form of Darlington pair and can carry up to 1 amp of current. Most transistors carry 100mA (3) Only a tiny base current is needed as the gain is around 1000 (4) Note however that this transistor switches at 1.2V Why?

Curtain Controller

9 Volt Battery Clip 3V Battery Clip 3 Terminal Blocks 1k resistor BC337 Transistor 1N4148 Diode Red LED 470 Ohm Resistor 1 DPDT relay 1 Toggle Switch 1 SPST Switch 2 Microswitches Motor Potential Divider – DPDT motor control (Reversal)

Potential Divider

Turn 0n Voltage for a Transistor

Variable Resistor Variable resistors consist of a resistance material with connections at both ends and a wiper which moves along the track as the arm is rotated through 270°. The track is normally rotary but straight track versions, usually called sliders, are sometimes used. The further clockwise the wiper is rotated, the larger the resistance.

Dark sensor

Moisture Sensor

Heat Sensor

Heat Sensor – Hot or Cold

P 1 P 2 T b T a