文档介绍:ponentsandtheirssymbolsUnit3DiodesUnit4TransistorsUnit5AmplifiersUnit6OperationalAmplifiersUnit7LogicGatesUnit8integratedcircuits(chips)onceptsofcircuittheoryVoltageandCurrentVoltageandcurrentarevitaltounderstandingelectronics,buttheyarequitehardtograspbecausewecan','push'or'force'oftheelectricity,itisn',,VVoltageisameasureoftheenergycarriedbythecharge.Strictly:voltageisthe"energyperunitcharge".,(orpowersupply).ponents,,,(zerovolts)Voltageisadifferencebetweentwopoints,butinelectronicsweoftenrefertovoltageatapointmeaningthevoltagedifferencebetweenthatpointandareferencepointof0V(zerovolts)[1].Zerovoltscouldbeanypointinthecircuit,(average),(amperes),(1amp)isquitealargecurrentforelectronics,somA(milliamps)(milli)means"thousandth":1mA=,or1000mA=1ACurrentismeasuredwithanammeter,,[2].ponents:onceptsofcircuittheoryInseries(F