What is the principle behind adding an op amp to the sensor output to improve resolution and increase current capability? - Analog electronics

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【Posts】What is the principle behind adding an op amp to the sensor output to improve resolution and increase current capability?
【Posts】What is the principle of op amp positive feedback plus diode clamping the op amp output?
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【Posts】Since the 74HC245 chip outputs what it inputs, how does it improve its driving capability?
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What is the principle of op amp positive feedback plus diode clamping the op amp output?
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Since the 74HC245 chip outputs what it inputs, how does it improve its driving capability?
Sincethe74HC245chipoutputswhatitinputs,howdoesitimproveitsdrivingcapability?
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