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Transcript
Circuit Elements Electric circuit is the interconnection of circuit elements Active • Capable of generating energy Passive • Not capable of generating energy • Voltage and current sources • e.g. resistor, inductor, capacitor • e.g. batteries, generators Here, we will look at: 1. Voltage and current sources (active elements) 2. Resistors (passive element) Later in the course we will have a look at capacitors and inductors (energy storage elements) Circuit Elements Voltage and current sources (Active elements) Independent sources Voltage or current independent of other circuit elements Dependent sources Voltage or current is controlled by other voltage or current Circuit Elements Voltage source Independent sources v V Delivers specified voltage at terminal regardless of circuit connected to it Current delivered (or drawn) depends on the circuit connected to it Circuit Elements Independent sources Current source i Delivers specified current at terminal regardless of circuit connected to it Voltage across it depends on the circuit connected to it Circuit Elements Dependent sources Dependent Voltage sources + - vs= vx Voltage-Controlled voltage source + - vs= ix Current-Controlled voltage source Circuit Elements Dependent sources Dependent Current sources is= ix Current-Controlled current source is= vx Voltage-Controlled current source
