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A zener diode of power rating 2 W is to ...

A zener diode of power rating 2 W is to used as a voltage regulator if the diode has a breakdown voltage equal to 10 v and has to gregulate voltage fluctuating between 8V and 12 v calculate the value of R for safe operation

Text Solution

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Given power rating P=2 W
Maximum voltage that can pass without breakdwon
`V_(Z) = 10 V`
Maximum current without breakdown.
`I_(Z) = (P)/( V_(z)) = (2)/( 10) = 0.2A`
`=(12V -10V)/( 0.2A) = (2V)/( 0.2A) = 10 Sigma`
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