Direct-current auxiliary power supply for current expanding type constant-current circuit voltage division

Abstract

The invention discloses a direct-current auxiliary power supply for current expanding type constant-current circuit voltage division. The direct-current auxiliary power supply comprises M constant-current modules and N voltage stabilizing modules which are connected sequentially in series, wherein the head end and the tail end of the constant-current modules and the voltage stabilizing modules are connected with the positive end HV+ and the negative end HV- of a direct-current power supply respectively, M={1, 2, ..., i, ..., m}, N={1, 2, ..., j, ..., n}, and m>=n>=1. Due to the fact that any constant-current module has a constant-current operating voltage range and any voltage stabilizing module has a voltage stabilizing operating voltage range, the specific number of the constant-current modules and the specific number of the voltage stabilizing modules are within a dynamic range, and the cumulative sum of voltage differences caused by this does not exceed the voltage difference between the positive end HV+ and the negative end HV- of the direct-current power supply. The direct-current auxiliary power supply is simple in design, reasonable in structure, convenient to construct, high in universality, and capable of overcoming the defect in high-voltage adaptability of an existing direct-current auxiliary power supply and effectively achieving direct conversion between a high-voltage direct-current power supply and a low-voltage direct-current power supply.

Description

technical field [0001] The invention relates to a DC auxiliary power supply, more specifically, a DC auxiliary power supply involving voltage division by a current-expanding constant current circuit. Background technique [0002] At present, the DC auxiliary power supply is mostly used in the low-voltage field, and the technology is relatively mature. However, due to the characteristics of the device and the insufficient withstand voltage performance of the circuit structure, if it is directly applied to a high-voltage circuit, there will inevitably be defects such as complex structure, high manufacturing cost, and poor versatility. Contents of the invention [0003] In view of this, the present invention aims to provide a DC auxiliary power supply with a current-expanding constant current circuit for voltage division, which can not only overcome the lack of high voltage adaptability of the existing DC auxiliary power supply, but also effectively realize the direct convers...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the device and the lack of withstand voltage performance of the circuit structure, if it is directly applied to a high-voltage circuit, there must be defects such as complex structure, high production cost, and poor versatility.

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