Analysis and Design of Multi-Range Voltage-Divider

Through theoretical analyzing and formula deriving,this paper researches the characteristic about 2 kinds of fixed resistor voltage-dividers including primitive type and capacitor-compensatory type and 3 kinds of multi-range voltage-dividers in parallel connection,serial connection and inter-linkage connection.After studying the design of the L-shape and fixed-impedance type geometric proportion voltage-divider,two key parameter tables about often-used geometric voltage-divider are given.In the tables,the formulas for 3 kinds of resistors in the L-shape divider and 4 kinds of resistors in fixed-impedance type divider are provided,the value of the resistors in the geometric voltage-divide net can be calculated easily.The error analysis shows that for the N-step of inter-linkage divider,its total error approximates the sum of each subnet's error.