Dielectric absorption may be a problem in circuits where very small currents are used in the function of an electronic circuit, such as long-time-constant integrators or sample-and-hold circuits.
22.
Capacitors may retain a charge long after power is removed from a circuit; this charge can cause dangerous or even potentially fatal dielectric absorption or from transient voltages the capacitor may pick up from static charges or passing weather events.
23.
In many applications of capacitors dielectric absorption is not a problem but in some applications, such as long-filters, it is important that the capacitor does not recover a residual charge after full discharge, and capacitors with low absorption are specified.
