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PowerPedia:Voltage breakdown

Lasted edited by Andrew Munsey, updated on June 14, 2016 at 10:05 pm.

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Breakdown Voltage (There was an error working with the wiki: Code[1]) = The minimum voltage that makes an insulator react as a Conductor (material).

Breakdown Voltage (There was an error working with the wiki: Code[6]) = The minimum reverse voltage to make the diode conduct in reverse. Some devices (such as There was an error working with the wiki: Code[7]s) also have a forward breakdown voltage.

In Detail

Insulators

Is a There was an error working with the wiki: Code[2] that defines the maximum There was an error working with the wiki: Code[3] flow. Breakdown voltage in this context is also sometimes called striking voltage.

Two different breakdown voltage measurements of a material are the AC and impulse breakdown voltages. The AC voltage is the line frequency of the mains (either 50 or 60 Hz depending on where you live). The impulse breakdown voltage is simulating lightning strikes, and uses a 1.2 microsecond rise for the wave to reach 90% amplitude then drops back down to 50% amplitude after 50 microseconds.

Two technical standards governing performing these tests are ASTM D1816 and ASTM D3300 published by ASTM.

Diodes

Is a There was an error working with the wiki: Code[4] in the diode. As long as the current is limited, exceeding the breakdown voltage of a diode does no harm to the diode. In fact, There was an error working with the wiki: Code[5] normal diodes that exploit the breakdown voltage of a diode to provide regulation of voltage levels.

See also

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Zener diode

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