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Design a power supply to deliver 4 to 9 Vdc adjustable voltage to control DC motor...

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Electrical Engineering

Design a power supply to deliver 4 to 9 Vdc adjustable voltageto control DC motor speed. Motor power at maximum load is 20W atmaximum speed (maximum voltage). Supply is 12V car battery with70Ah capacity. How long the battery will last at maximum load andmaximum speed? Add a 13.8Vdc communications power supply tocontinuously charge the battery at 500mA.

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4.2 Ratings (810 Votes)
I have small doubt about power supply selection for a running motor I have a small dc motor which is rated for 12V 3Arated When the motor runs with a load 4000N the current consumption is 15A So I have to choose a 12V 3A 12 3 36W power supply to run the motorThis is because DC power supply can supply continous 3A current without any disturbance Now I wanted to run same motor on battery I would like to know    See Answer
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