Physics Test - Pt2 0.0 / 5 ? PhysicsElectricityNational 5All boards Created by: matildamcbeanCreated on: 20-05-18 16:17 Electronic Systems -come in three parts: Input - Process - Output 1 of 28 Input Devices -convert one from of energy into electrical energy to be processed 2 of 28 Output Devices -convert electrical energy into another form of energy, after being processed 3 of 28 Electronic Signals -digital & analogue 4 of 28 Analogue -wave pattern has many different values of voltage, -voltage changes over a set amount of tome 5 of 28 Digital -has fixed values of voltage, -voltage is at one particular value for a set amount of time 6 of 28 Binary Signals -a digital signal which is either on or off, ON = HIGH = 1, OFF = LOW = 0 7 of 28 Solar Cells Input Device, light energy - electrical energy 8 of 28 Microphone Input Device, sound energy - electrical energy 9 of 28 Thermocouple Input Device, heat energy - electrical energy 10 of 28 Thermistor -changes with temperature, increase in temp. gives a decrease in resistance TURD (Temp. Up Resistance Down) 11 of 28 LDR -changes with light level, an increase in light level gives a decrease in resistance LURD (Light Up Resistance Down) 12 of 28 Loudspeaker Output device, ANALOGUE, electrical energy - sound energy 13 of 28 Buzzer Output device, DIGITAL, electrical energy - sound energy 14 of 28 Motor Output device, ANALOGUE, electrical energy - kinetic energy 15 of 28 Solenoid Output device, DIGITAL, electrical energy - kinetic energy 16 of 28 Lamp Output device, ANALOGUE, electrical energy - light energy 17 of 28 LED (Light Emitting Diode) Output device, DIGITAL, electrical energy - light energy 18 of 28 NOT Gate -inverts the input, used when opposite output is needed 19 of 28 AND Gate -needs two HIGH inputs to be ON, used when an output comes on with both inputs on 20 of 28 OR Gate -needs only one HIGH input to be ON, used when an output comes on with either input on 21 of 28 Magnetic Materials -naturally magnetic materials are made from iron, cobalt or nickel 22 of 28 Magnetic Poles -opposite poles will attract each other, similar poles will repel each other 23 of 28 Electromagnetism -forcing electrical charges to move through an electric field will produce a magnetic field 24 of 28 Electromagnets -can be made by winding a conducting wire around an iron core and passing an electrical current along the wire 25 of 28 Increasing the strength of an electromagnet -increasing the number of coils of wires around the iron nail or increasing the voltage 26 of 28 Advantages of an electromagnet -they can be switched on an doff, the strength can be changed 27 of 28 Uses of Electromagnets -electric bells, relay switch 28 of 28
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