DC brushless motor air conditioning system control circuit
A brushless DC motor and control circuit technology, applied in electrical program control, electric speed/acceleration control, program control in sequence/logic controllers, etc. Unsatisfactory use conditions, inability to change the speed and other problems, to achieve the effect of enhanced applicability and composability, shortened product development cycle, and stable speed control
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[0036] see Figure 9 , DC brushless motor air conditioning system control circuit, including microcontroller U4, indoor DC fan motor speed control circuit, outdoor DC fan motor speed control circuit, outdoor DC motor fixed speed and adjustable speed switching circuit, indoor motor speed regulation voltage cut-off Circuit, outdoor motor speed regulation voltage cut-off circuit and temperature detection circuit; the indoor DC fan motor speed control circuit, outdoor DC fan motor speed control circuit and temperature detection circuit are all connected to the microcontroller; the indoor motor speed control circuit The speed voltage cut-off circuit is connected with the indoor DC fan motor speed control circuit, and the outdoor motor speed regulation voltage cut-off circuit and the outdoor DC motor fixed speed and adjustable speed switching circuit are connected with the outdoor DC fan motor speed control circuit. connect;
[0037] The outdoor DC fan motor speed control circuit i...
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