Chapter 24 Transients in R—L—C systems

24.1 First- and second-order systems

There are two types of system that we shall be concerned with: first-order and second-order systems:

  • A first-order system is one that can be modelled using a first-order differential equation. First-order electrical systems involve combinations of C and R or L and R.
  • A second-order system is one that can be modelled using a second-order differential equation. Second-order electrical systems involve combinations of all three types of component: L, C and R.

You met the time response of simple CR and LR systems in the last chapter. In the first case, the voltage developed ...

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