What is dielectric absorption?

Dielectric absorption occurs when a capacitor that has been charged for a long time retains a small amount of voltage after a short release. The capacitor will have this small amount of voltage, even if it has been attempted to fully discharge it. This effect usually takes a few seconds to a few minutes.

In ideal circumstances, the capacitor should be after passing through the draining process on zero volts. However, the capacitors often retain a small amount of voltage of dielectric absorption, which is also known as suction. The effect of dielectric absorption occurs due to polarization in the material used for insulation, which is also considered independent of the capacitor capacity.

The amount of voltage that remains does not necessarily have to be essential. In certain dielectrics, this voltage may only be about 1 percent of the original amount. This amount often depends on the type of dielectric used. For example, materials such as polymer -filmed is about 1 percent remaining after discharge, but Super KondeNzators and electrolytic capacitors can have up to 25 percent of the original voltage.

Dielectric absorption is considered to be bane in the field of electronics. When the amount becomes so excessive, it will affect the operation of a particular electronic device. The person can alleviate the capacitor of the excess charge by testing it to the voltage and re -checking its value. It is easy to use a device called the capacitor analyzer. This gadget will analyze the dielectric absorption and re -check its value until the capacitor remains no voltage.

When a dielectric absorption occurs on electronic devices, it can usually be left alone, because most of the voltage remains and often disperses in a short time. However, it may be necessary for certain devices to be a condenser that they have supercapacitors that tend to have excessive charging that By could damage the operation of the circuit. One can often test dielectric absorption in capacitors, provided that safety measures are used. Incorrect use could also hurt the user and capacitor.