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If you are asking from where you can obtain a d.c. supply without using a rectifier supplied from an a.c. source, then the answer is that d.c. supplies are directly available from batteries or from d.c. generators.

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12y ago

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Where should ac or DC supply be used?

The type of power supply being used (AC or DC) should match the power requirements of the device it will be supplying power to.


Function of power supply?

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What is the advantages of the universal motors?

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