Circuits I Formulas for Electronics
Voltage Division
V1 = Vs Z1/(Z1 + Z2)
V2 = Vs Z2/(Z1 + Z2)
Current Division
I1 = Is Z2/(Z1 + Z2)
I2 = Is Z1/(Z1 + Z2)
Complex Impedances
ZR = R
ZL = jwL
ZC = 1/jwC
Series Equivalent Impedance
Z total = Z1 + Z2 + .....
Parallel Equivalent Impedance
1/Z total = 1/Z1 + 1/Z2 + .....
Thévenin Equivalent
V Thévenin = V Open Circuit
I Norton = I Short Circuit
Z Thévenin = V Open Circuit/I Short Circuit