How much will be the power loss in SMPS of a brushless DC motor based ceiling fan?

Input is 230V AC,

Output is 24VDC,

Fan consumed 28W at highest speed of 350rpm.

2 Answers

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  • 4 weeks ago

    YOU NEED TO PROVIDE INPUT CONSUMPTION POWER IN WATT FIRST BEFORE ABLE TO FIGURE IT OUT.

  • 4 weeks ago

    Switch Mode Power Supplies run at typically 85 - 90% efficiency. 

    using the 90% number, 28 W / 0.9 = 31 watts input, with a los of 3 watts. 

    Could be a loss of 4 watts if the efficiency is a bit lower.

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