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Debanjana adhikari Asked a Question
May 16, 2020 11:27 ampts 30 pts
  • CSIR NET
  • Physical Sciences

Please provide the corresponding theory

The pins 0, 1, 2 and 3 of part A ofa microcontroller are connected with resistors to drive Vcc an LED at various intensities as shown in the figure. For Vec=4.2V and a voltage drop of 1.2 V across the LED, the range (maximum current) and resolution (step síze) of the drive current are, respectively, AP 13 k A W 1.5k 3k 6k uC A (a) 4.0 mA and 1.0 mA (b) 15.0 mA and 1.0 mA (c) 75 mA and 0.5 mA (d) 4.0 mA and 0.5 mA Ao w
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  • Abhishek singh
    Complete solution with explaintion is attached. go through it. And ask doubts if any. Best regards.
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  • Ruby negi
    for minimum current, when current flow through max resistance that is 6k so current is 3/6=0.5mA.... hope you get...
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  • Ruby negi
    solution... also see this.
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  • Dhairya sharma thankyou
    and resolution means it's maximum power which it can distribute for this we do voltage difference / mimium resistance. in last we take all the resistance and voltages . here onky m...
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    • cropped8536231415416978166.jpg
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  • Dhairya sharma
    dear for maximum current what we will do.... just (Vcc - voltage drop) / minimum resistance.like m attaching
    • cropped2903585207356805939.jpg
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  • Ruby negi
    solution
    • cropped1465387557.jpg
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    Debanjana adhikari
    what does it mean that A0 A1 A2 A3 zero for maximum current? why is this happening??
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