explain zener impedance and zener diode ?
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Zener impedance is the equivalent series resistance of a Zener diode when it is conducting current. It is calculated as a change of Zener voltage, ΔVZ, that occurs as a result of a tiny change in Zener current, ΔIZ. ... Thus, a Zener diode acts as such only in a limited current range
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A Zener diode is a silicon semiconductor device that permits current to flow in either a forward or reverse direction. The diode consists of a special, heavily doped p-n junction, designed to conduct in the reverse direction when a certain specified voltage is reached.
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