ECE201CircuitTheoryI

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,Voltage and Current SourcesCircuit Symbols,1,“IDEAL” or “Independent” Sources,IDEAL voltage source,maintains the prescribed voltage across its terminals regardless of the current drawn from it,IDEAL current source,maintains the prescribed current through its terminals regardless of the voltage across those terminals,2,“Controlled” or “Dependent” Sources,A voltage or current source whose value “depends” on the value of voltage or current elsewhere in the circuit,Use a diamond-shaped symbol,3,Voltage-Controlled Voltage Source VCVS,V,s,is the “output” voltage,V,x,is the “reference” voltage,u is the “multiplier”,V,s,= uV,x,4,Current-Controlled Voltage Source CCVS,V,s,is the “output” voltage,I,x,is the “reference” current,p is the multiplier,V,s,= pIx,5,Voltage-Controlled Current Source VCCS,I,s,is the “output” current,V,x,is the “reference” voltage,a is the multiplier,I,s,= aIx,6,Current-Controlled Current Source CCCS,I,s,is the “output” current,I,x,is the “reference” current,b is the multiplier,I,s,= bIx,7,Common-Emitter Transistor Amplifier,8,The transistor and its equivalent circuit,9,Substituting the equivalent circuit for Q1,10,Active and Passive Elements,Active element,a device capable of generating electrical energy,Voltage source,Current source,Power source,Batteries,Generators,a device that needs to be powered (biased),transistor,Passive element,a device that absorbs electrical energy,Resistor,Capacitor,Inductor,motor,light bulb,heating element,11,