Electronic Component Symbol Function Practical Application To convert light Calculator Photovoltaic cell energy into electrical energy To limit the and breaks Fuse current flowing when the flow of into a circuit current is too high To block the flow Will only a.c to of current in one flow in one direction Diode direction around a circuit. Used in radios and TV to convert radio or TV signals To store electric Used in timing Capacitor charge circuits to produce a time delay. Traffic lights When its Used as an input temperature device to a central Thermistor increases its heating system. resistance decreases and vice versa When the light Light sensor which levels on it switches on a lamp LDR decrease, its at dusk resistance increases. Fuses
Electronic Component Symbol Function Practical Application Photovoltaic cell To convert light energy into electrical energy Calculator Fuse To limit the current flowing into a circuit and breaks when the flow of current is too high Diode To block the flow of current in one direction Will only a.c to flow in one direction around a circuit. Used in radios and TV to convert radio or TV signals Capacitor To store electric charge Used in timing circuits to produce a time delay. Traffic lights Thermistor When its temperature increases its resistance decreases and vice versa Used as an input device to a central heating system. LDR When the light levels on it decrease, its resistance increases. Light sensor which switches on a lamp at dusk Fuses
Unit-1-Electricity-and-Energy-Summary-part-2.docx