* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Inputs? Outputs? ELECTRONICS
Electric battery wikipedia , lookup
Alternating current wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Electrical ballast wikipedia , lookup
Electronic engineering wikipedia , lookup
Flexible electronics wikipedia , lookup
Fault tolerance wikipedia , lookup
Current source wikipedia , lookup
Earthing system wikipedia , lookup
Circuit breaker wikipedia , lookup
Integrated circuit wikipedia , lookup
Buck converter wikipedia , lookup
Rectiverter wikipedia , lookup
Two-port network wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Semiconductor device wikipedia , lookup
Current mirror wikipedia , lookup
Printed circuit board wikipedia , lookup
Network analysis (electrical circuits) wikipedia , lookup
ELECTRONICS WHAT DOES ‘ELECTRONICS’ MEAN TO YOU ? What are the inputs and the outputs? Check out the inputs on this formula one race car This is the output from this CNC machine Hot water system • What is the inputs and the output What controls the temperature of the water? What would happen if we had no control over the temperature? Solar Hot Water system • What controls this system? Automatic doors • Automatic Doors are also a system. • What are the inputs and the outputs Inputs? Outputs? ELECTRONICS • The basis of electronics is the controlled movement of electrons through a circuit, usually consisting of a power supply, circuit board, wires, and a series of components. BATTERIES are used in a wide range of applications and come in a diverse range of size and shape BATTERIES Batteries provide the force to create the flow of electrons ( I, current ) in most small circuits. A battery can be compared to a water pump that forces water through a pipe. The pressure of the pump can be compared to voltage ( V ) of a battery. (BLACK) (RED) BATTERY SYMBOL RESISTORS • Resistors reduce the amount of current flow in a circuit, and is similar to kinking a hose - it reduces the flow of water. • Resistor come in many different values (measured in OHMS, Ω) The higher the value the more the current flow is reduced. RESISTORS The coloured stripes on a resistor indicate its value RESISTOR SYMBOL 4K7 RESISTOR COLOUR CODE Resistors also come in a variety of sizes and types. L.E.D (Light Emitting Diode) L.E.D.s are used in place of small light bulbs. They use less power, cost less, and last for 50,000 hours (approx) L.E.D (Light Emitting Diode) • An L.E.D. is a special type of diode that gives off light. As it is a diode it only conducts electricty in one direction and it has to be inserted the right way round. (Polarity) The short leg is the Negative leg. L.E.D SYMBOL TRANSISTOR A Tansistor is used as an amplifier or a switch. It uses a very small current to then ‘turn on’ a larger, more useful current, which can be used to then power a light or a speaker. C B TRANSISTOR SYMBOL E Transistors also come in a variety of sizes and types. Circuit Diagram R1 56ohm R2 10Mohm Printed Circuit Board (PCB) Usually a fibreglass panel that has a copper coating. This copper coating is sreen printed and then acid etched to form tracks through which electricity can flow. The various components and wires are inserted through the holes and soldered into place Now its over to you • Explain how the touch torch circuit works • What is the control in the circuit • Describe how the control system makes the torch better, what if it wasn’t there? • Draw the circuit diagram using conventions • Explain what each part is and what it does