Switching mode power source
A technology of switching mode power supply and switching tube, which is applied in the direction of electrical components, adjusting electric variables, output power conversion devices, etc., can solve the problems of slow response speed, poor loop stability, complex circuit scheme, etc., and achieve block response speed, High loop stability, good effect of loop stability
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[0015] Such as figure 2 As shown, a switch mode power supply provided by the present invention includes a rectifier filter 1, a controller 2, a switch tube 3 and a transformer 4, and the transformer 4 includes a primary coil 41, a secondary coil 42 and an auxiliary coil 43, the primary coil 41 is connected to one end of the switch tube 3, the other end of the switch tube 3 is connected to the current detection terminal of the controller 2, the secondary coil 42 is used to connect the output circuit 5, and the output terminal of the rectifier filter 1 is connected to the control The power input terminal of the device 2, the drive waveform output terminal of the controller 2 is connected to the control terminal of the switch tube 3, and the controller 2 is used to output the drive waveform according to the input feedback voltage to control the on-off of the switch tube 3 to stabilize the secondary The voltage or current output by the coil 42, wherein the auxiliary coil 43 of th...
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