First-Order Circuit
- can only contain one energy storage element (a capacitor or an inductor). The circuit will also contain resistance.
Two types of First-Order Circuits:
1. RC Circuit
2. RL Circuit
- is one where all independent sources have been disconnected from the circuit after some switch action. The voltages and currents in the circuit typically will have some transient response due to initial conditions (initial capacitor voltages and initial inductor currents). We will begin by analyzing source-free circuits as they are the simplest type. Later we will analyze circuits that also contain sources after the initial switch action.
SOURCE-FREE RC CIRCUITS
SOURCE-FREE RL CIRCUITS
Consider the RL circuit shown below. Use KCL to find the
differential equation:
Watch a Video using First-Order Circuit!
Reflection:
During our lesson, I have learned more about capacitors and inductors. Capacitors are treated as open circuit in DC while inductors are treated as short circuit in DC. This will be the last topic for this semester and sometimes when I try to solve the problem, I always get confused. But once I have practice solving it, I find it more convenient.
