Power supply circuit, control method and device of power supply circuit, and air conditioner
A technology of power supply circuit and control method, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc., can solve problems such as power supply system damage, and achieve the effect of improving reliability and avoiding damage
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Embodiment 1
[0083] In one embodiment of the present invention, as figure 1 , figure 2 with Figure 4 As shown, a power supply circuit 100 is provided, including: a first control circuit 102; a first power supply circuit 104, the first power supply circuit 104 is connected to the first control circuit 102; a second power supply circuit 106, the second power supply circuit 106 Connected with the first power supply circuit 104; second control circuit 108, the second control circuit 108 is connected with the second power supply circuit 106, and the second control circuit 108 is configured to judge abnormality according to the power supply signal output by the second power supply circuit 106 As a result, the second power supply circuit 106 is controlled to supply power to the first power supply circuit 104 .
[0084] The present invention proposes a power supply circuit 100, wherein the power supply circuit 100 includes a first control circuit 102, a first power supply circuit 104, a second...
Embodiment 2
[0097] In any of the above embodiments, if Figure 4 As shown, the power supply circuit 100 further includes: a first inverter circuit, an input terminal of the first inverter circuit is connected to a capacitor, and an output terminal of the inverter circuit is configured to output a first operating voltage.
[0098] In this embodiment, the provided first inverter circuit can output a first operating voltage so as to operate loads such as compressors or fans.
[0099] In one embodiment, the first inverter circuit is connected to the first control circuit 102, wherein the first control circuit 102 controls the first inverter circuit to stop outputting or output the first operating voltage according to the start-stop signal of the load, so that The compressor connected to the first operating voltage stops running or running, thereby realizing the control of the load running state.
[0100] Specifically, when the demand signal of the load is zero, a shutdown signal of the load ...
Embodiment 3
[0104] In an example of the present invention, as Figure 5 As shown, a control method for the power supply circuit of the above power supply circuit is proposed, wherein the method includes:
[0105] Step 502: Control the second power supply circuit to supply power to the first power supply circuit according to the abnormal judgment result of the power supply signal output by the second power supply circuit.
[0106] The present invention proposes a control method for a power supply circuit, which determines whether the second power supply circuit supplies power to the first power supply circuit and the first control circuit by detecting whether the power supply signal output by the second power supply circuit is abnormal. The first power supply circuit and the first control circuit are damaged due to wrong power-on, thus improving the reliability of the power supply circuit.
[0107] In one embodiment, step 502, controlling the second power circuit to supply power to the fi...
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