Dielectric constant
Laboratory > Electricals
| Dielectric Constant | |
The dielectric constant is the ability of a substance to maintain electrical energy in proportion to the permittivity of the surrounding space is the dielectric constant. When the constant intensifies but other factors remain the same, the electric force field grows in density. Under these conditions, an object of a specific weight and measurement may contain an electric charge, as well as larger amounts of charge, for longer periods of time. High value capacities are among the materials that benefit from having high dielectric constants. However, a high level dielectric constant is not exactly an ideal condition for all substances. A material that has a high dielectric constant will be more vulnerable to separation when exposed to extreme electric fields, at least in contrast to substances with lower constants. Dry air is an example of a substance with a low dielectric constant that, however, produces an ideal dielectric substance for capacitors that use fully powerful radio frequency transmitters. In the event that the dielectric conducts an electrical charge and then begins to decompose, the condition is only temporary. Once the extreme field of electrical energy collapses, the air returns to its regular dielectric level. Other substances could incur lasting damage under such conditions. Examples include glass and polyethylene. |  |
Note | |
IEC 60250 Dry air is an example of a substance with a low dielectric constant that, however, produces an ideal dielectric substance for capacitors that use fully powerful radio frequency transmitters. In the event that the dielectric conducts an electrical charge and then begins to decompose, the condition is only temporary. Once the extreme field of electrical energy collapses, the air returns to its regular dielectric level. Other substances could incur lasting damage under such conditions. Examples include glass and polyethylene. |  |