Control device of brushless direct current fan
A DC fan and control device technology, applied in pump control, non-variable pumps, machines/engines, etc., can solve problems such as inaccurate selection of wind speed
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[0014] The principle diagram of the present invention is as figure 1 As shown, it includes a central control unit 1, a key circuit 2, and a remote control receiving circuit 3, wherein the signal input terminals of the central control unit 1 are connected to the signal output terminals of the key circuit 2 and the remote control receiving circuit 3 respectively, and the signal of the central control unit 1 The output end is connected to the voltage speed regulation signal input end of the brushless DC motor 4 that drives the brushless DC fan, and the speed signal output end of the brushless DC motor 4 is connected to the signal input end of the central control unit 1 .
[0015] In this embodiment, the above-mentioned central control unit 1 is a single-chip microcomputer. A display circuit 5 is also connected to the signal output end of the central control unit 1 .
[0016] The display circuit 5 includes a display driver chip and a display element, the input end of the display ...
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