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Dependence of Resistance on Temperature

In a zener re...

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In a zener regulated power supply a zener diode with Vz=6V is used for regulation. The load current is to be 4mA and the unregulated input is 10V. What should be the value of series resistor R?

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Q. In a Zener diode regulated power supply, unregulated DC input of

10 V

is applied. If the resistance

(R_{s})

connected in series with a Zener diode is

200 Ω

and the Zener voltage

V_{z} = 5 V

, the current across the resistance

R_{s}

Q. Consider the Zener voltage regulator shown in the figure below.

The zener diode has

$V_{z} = 10 V, I_{z (min)} = 5 m A a n d I_{z (max)} = 24 m A .$
The range of value of the load current $I_{L}$ is

Q. Figure shows a

DC

voltage regulator circuit, with a Zener diode of breakdown voltage

= 6 V .

If the unregulated input voltage varies between

10 V

16 V,

then what is the maximum Zener current ?

Q. The figure represents a voltage regulator circuit using a Zener diode. The breakdown voltage of the Zener diode is 6V and the load resistance is

R_{L} = 4 k Ω

. The series resistance of the circuit is

R_{i} = 1 k Ω

. If the battery voltage

V_{B}

8 V

16 V

, what are the minimum and maximum values of the current through Zener diode ?

Q. A zener diode voltage regulator operated in the range

120 - 180 V

produces a constant supply of

110 V

250 m A

to the load. If the maximum current is to be equally shared between the load and zener, then the values of series resistance (

R_{S}

) and load resistance (

R_{L}

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