Air conditioner, alternating current motor and speed adjusting device thereof
A technology of AC motors and speed control devices, which is applied in the field of air conditioners, AC motors and their speed control devices, can solve problems such as electromagnetic noise, and achieve the effects of easy implementation, increased number of gears, and low cost
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[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0021] figure 1 A schematic diagram of the principle of the AC motor speed regulating device according to Embodiment 1 of the present invention is shown. Such as figure 1 As shown, the AC motor speed regulating device includes a main speed regulating unit 10 , an auxiliary speed regulating unit 20 and a gear selector 30 .
[0022] Wherein, the input end of the main speed regulating unit 10 forms the main speed regulating input end 11 connected with the controller, and the output end forms the main speed regulating output end 12 connected with a plurality of live wire terminals of the AC motor 50; the auxiliary speed regulating unit 20 has The first branch circuit 21 and the second branch circuit 22, the first branch circuit 21 and the second branc...
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