transient response

In electronics, a transient response refers to how a circuit reacts to a sudden change, like a surge of electricity. This happens when a disturbance, such as a lightning strike or a power supply fluctuation, causes a temporary current or voltage change.12

Consider a circuit with a resistor and a capacitor. When the voltage is suddenly increased, the capacitor initially allows current to flow freely. As it charges, the current decreases, and the voltage across the capacitor gradually rises until it reaches the new steady state.2

Capacitors play a crucial role in managing these transient voltages. They can shunt high-frequency signals to ground, protecting sensitive electronic components from damage caused by sudden voltage spikes.2