Voltage dividing direct-current auxiliary power supply for current amplification type adjustable constant-current circuit

Abstract

The invention discloses a voltage dividing direct-current auxiliary power supply for a current amplification type adjustable constant-current circuit. The power supply is formed by sequentially connecting M constant-current modules with N voltage-stabilizing modules in series, and the head end and the tail end of the power supply are connected with a direct-current power supply positive end HV+ and a direct-current power supply negative end HV- respectively, wherein M={1, 2, ..., i, ..., m}, N={1, 2, ..., j, ..., n}, and m>=n>=1. When the power supply is designed and used, due to the fact that each constant-current module has a constant-current operating voltage range and each 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 both determined within a dynamic range, and the sum of caused voltage difference is not larger than the voltage difference between the direct-current power supply positive end HV+ and the direct-current power supply negative end HV-. The power supply is simple in design, reasonable in structure, convenient to construct, high in universality, and capable of overcoming the defect of existing direct-current auxiliary power supplies that high-voltage adaptability is poor and effectively achieving direct high-low voltage direct-current power supply conversion.

Description

technical field [0001] The invention relates to a DC auxiliary power supply, more specifically, a DC auxiliary power supply involving a current expansion type adjustable 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-expanding adjustable 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 effectivel...

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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