Superposition
Principle of "Superposition"
When a linear circuit is excited by more than one independent source of energy, the total response is the sum of the responses to each source acting indivi
Wheatstone Bridge
ECE 201 Circuit Theory I
1
Analysis
Identify the currents
ECE 201 Circuit Theory I
2
Consider the bridge at "balance", ig=0
1 i 2 i i3 R3 1 R1 i
i3 ix ix Rx i2 R2
ECE 201 C
Voltage Divider Circuit
Developing more than one voltage level from a single voltage supply
ECE 201 Circuit Theory I
1
Identify the current and Apply KVL
vS i v1 v2 iR1 iR2 vS R1 R2 iR1 iR2 vS vS
Current Divider Circuit
Split (divide) a current into two or more currents
ECE 201 Circuit Theory I
1
Identify the Voltage and Apply Ohm's Law
v i1 R1 i1 i2 is is
i2 R2 R2
R1 R2 is R1 R2
R1 R2
Node-Voltage Method
Identify the nodes
R1 1 Ohm R3 2 Ohm
Vbattery 10 V
R2 5 Ohm
R4 10 Ohm
I 2A
There are 3 "essential" nodes. Node 0 is the "ground" or "reference" node where the voltage is eq