Position: Index > Transistor Circuit >

TRANSISTOR_INCREASES_ZENER_RATING

2016-05-08 19:18  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


TRANSISTOR_INCREASES_ZENER_RATING
The simple zener shunt in A may not handle sufficient current if the zener available is of low wattage. A power transistor will do most of the work for the zener as shown in B. Once the zener starts conducting, a bias voltage develops across the resistor (330 Ω to 1K), turning on the transistor. The output voltage is 0.7 V greater than the zener voltage.