A Multilevel High Voltage Flyback Switching Power Supply
A switching power supply and flyback technology, applied in electrical components, adjusting electrical variables, instruments, etc., can solve problems such as high voltage cannot be input, and achieve the effects of reducing withstand current, improving reliability and stability, and using safely
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[0040] In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.
[0041] see figure 1 , the multi-level high-voltage flyback switching power supply of the present invention includes a rectification module 10, a current sampling resistor module 11, a control chip 12, a drive isolation module 13, a transformer T, n-level capacitors C connected in series, and n-level MOS transistors Q, Among them, n is a natural number greater than or equal to 2; every two adjacent capacitors C form a capacitor midpoint, which can form n-1 capacitor midpoints, that is, from the connection of the second primary coil L to form the first The midpoint of the first-stage capacitor, the transformer T is provided with multi-stage primary coils L and secondary coils LL respectively connected to each primary coil L; the AC power supply voltage is rectified by the rectifier module 10 to form a DC voltage, an...
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