Diac - involves two diodes and will allow current to flow in either direction once it reaches a certain value, Diode - electronic device that allows current to flow one way but not the other, Full Bridge Rectification - conversion of the complete cycle of alternating current into pulsating DC., Half wave rectification - only one-half cycle of an AC voltage waveform to pass while blocking the other half cycle, Light dependent resistor - a device that reduces its resistance when light falls on it, allowing current to flow, Light Emitting Diode - A semiconductor device that is used within downlighters and floodlights, Photo Diode - light sensitive semi conductor component which converts light energy into electrical energy and is used in burglar alarms, Resistor - a component that limits current in a circuit, Thermistor - A temperature sensitive component, Thyristor - An electronic device conducts when it is gated and is used in DC motor control applications, Transistor - electronic device is used to amplify signals or act as an electronic switch., Triac - semiconductor device is used to control the speed of AC motors, Zener Diode - semiconductor device is used within voltage regulators,

Electronics Revision 2

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