Definition: The time constant (τ) equals RC, representing the time taken for significant charge or discharge progression.

Example: At 0.63E during charging (or 0.37E during discharging), the elapsed time equals one time constant.

Highlight: The circuit reaches steady state after approximately 5 time constants (5τ).

Vocabulary: "Régime transitoire" refers to the transient state, while "régime stationnaire" indicates steady-state operation.

Quote: "Quand on arrive au régime stationnaire (la courbe devient droite) on est à 5T" (When reaching steady state, where the curve becomes straight, we are at 5T).

Definition: A capacitor consists of two conducting plates separated by an insulating material called a dielectric, capable of storing electrical charge.

Vocabulary: Capacitance (C) is measured in Farads (F) and represents a component's ability to store electrical charge.

Example: When voltage is applied across a capacitor, one plate becomes negatively charged while the other becomes positively charged, maintaining electrical neutrality.

Highlight: The charging equation for a capacitor follows the form Uc$t$ = E$1-e^(-t/RC)$, where E is the applied voltage and RC is the time constant.

Quote: "La capacité est proportionnelle à S et inversement proportionnelle à d" (Capacitance is proportional to area and inversely proportional to distance).