This is due to a property called dielectric absorption, in which energy stored in the dielectric during use is released gradually over time.
12.
For example, dielectric absorption refers to the inability of a capacitor that has been charged for a long time to completely discharge when briefly discharged.
13.
But especially for electrolytic capacitors with high rated voltage the voltage at the terminals generated by the dielectric absorption can be a safety risk to personnel or circuits.
14.
A flashtube will usually shut down before the capacitor has fully drained, and it may regain part of its charge through a process called " dielectric absorption ".
15.
Tantalum capacitors offer better frequency and temperature characteristics than aluminum, but higher dielectric absorption and leakage . Solid electrolyte, resin-dipped 10 ?F 35 V tantalum capacitors.
16.
Dielectric absorption can cause a problem in circuits where very small currents are used, such as long-time-constant integrators or sample-and-hold circuits.
17.
The voltage at the terminals generated by dielectric absorption may in some cases possibly cause problems in the function of an electronic circuit or can be a safety risk to personnel.
18.
Dielectric absorption may be a problem in circuits using very small currents in electronic circuits, such as long-time-constant integrators or sample-and-hold circuits.
19.
In addition, PP film capacitors have the lowest dielectric absorption, which makes them suitable for applications such as VCO timing capacitors, sample-and-hold applications, and audio circuits.
20.
Glaciers are well suited to investigation by radar because the imaginary part of the permittivity of ice is small relative to its real part; this ratio is called the dielectric absorption is also small.
