Compare the basic construction of Zener diode with a common rectifier diode. Explain Zener breakdown and the corresponding characteristic curve for a Zener diode with Vz = 10 V connected in 12 V regulated power supply. Calculate the Zener impedance if the change in Zener voltage is 150 mV for a 15mA change in Zener current on the linear portion of the characteristic curve.
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