1/ A bridge-amplifier is used to realize_______. a high CMRR a high maximum comm
ID: 1840878 • Letter: 1
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1/
A bridge-amplifier is used to realize_______. a high CMRR a high maximum common-mode input voltage a high out-put voltage swing a high output resistance all of the above none of the above A V -multiplier is used for biasing______amplifier. Class A Class B Class AB Class E all of these Thermal shut-down circuit is connected to the_________of the operational amplifier. first-stage second-stage output stage from output to the input The second-breakdown in power BJTs is caused by____________. avalanche multiplication across B-C junction current-crowding in the periphery of B-E junction Zener breakdown across B-E junction melting of bond wire connecting the contact pads to package terminals A feedback amplifier with one pole is_________. unconditionally stable always unstable can be unstable depending on the amount of feedback none of theseExplanation / Answer
1. (a) a high CMRR
2. (c) Class AB
3. (d) From output to the input. (The thermal shutdown indicator flag provides a current output to alert the user when thermal shutdown has occurred.)
4. (b) Current crowdind in the periphery of B-E Junction. (Secondary breakdown is a failure mode in bipolar power transistors. In a power transistor with a large junction area, under certain conditions of current and voltage, the current concentrates in a small spot of the base-emitter junction. This causes local heating, progressing into a short between collector and emitter. This often leads to the destruction of the transistor.)
5. (a) Unconditionally Stable
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