Current expanding type direct-current auxiliary power source achieving voltage dividing through constant current circuit

Abstract

The invention discloses a current expanding type direct-current auxiliary power source achieving voltage dividing through a constant current circuit. The current expanding type direct-current auxiliary power source is formed by sequentially connecting M constant current modules and N voltage stabilizing modules in series, the head end and the tail end of the current expanding type direct-current auxiliary power source are connected with the positive end HV+ and the negative end HV- of a direct-current power source respectively, wherein M={1,2,...,i,...,m}, N={1,2,...,j,...,n}, and M>=N>=1. In the design and use process, due to the fact that any constant current module has a constant current work voltage range, and any voltage stabilizing module has a voltage stabilizing work voltage range, the specific number of the M constant current modules and the N voltage stabilizing modules is determined according to a dynamic range, and the sum of accumulative voltage differences generated by the constant current modules and the voltage stabilizing modules cannot exceed the voltage difference of the positive end HV+ and the negative end HV- of the direct-current power source. The current expanding type direct-current auxiliary power source is simple in design, reasonable in structure, convenient to construct and good in universality, the defects of the high-voltage adaptability of an existing direct-current auxiliary power source can be overcome, and direct conversion of high-voltage and low-voltage direct-current power sources can be effectively achieved.

Description

technical field [0001] The invention relates to a DC auxiliary power supply, more specifically, to a DC auxiliary power supply with a current expansion type constant current circuit for voltage division. 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 expansion type constant current circuit 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 co...

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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