Electric Circuit Analysis

Features of RL Circuit Step Response    10.13

10.4 FEATURES OF RL CIRCUIT STEP RESPONSE

Step response in electrical circuit analysis context implies application of the unit step function, u(t),

as the input. The response to this unit step application can be described in terms of a chosen circuit

variable, which may be a voltage variable, a current variable or a linear combination of voltage and

current variables. We had chosen the current through inductor as the response variable in the case of

series RL circuit. The current waveform was shown to be

i

R

e t

t

L

= − ≥

− +

1

1 0( );

/t

(10.4-1)

The primary objective in applying an input function to ...