RESISTANCE DETERMINING METHOD FOR CONSTANT VOLTAGE OUTPUT CIRCUIT

摘要

PROBLEM TO BE SOLVED: To decrease the number of resistors with short-circuit wires which are used by making a return to a step wherein two pieces of data are selected so that only data of the best evaluated value obtained by comparing the evaluated values of all pieces of data with a specific value is left and repeatedly determining them. SOLUTION: Resistors R1B with short-circuit wires are used as a specific number of resistors R1Bm and R1B1 of a resistor group R1 on the side of a power terminal between resistor groups R1 and R2, search ranges which are different by the resistors R1B with the short-circuit wires are determined, and different pieces of data determining the resistance of the resistors R1B with the short-circuit wires within the ranges are generated. Those data are used and given evaluated values according to differences from a target output voltage when an output voltage Vo is obtained and the evaluated values are all compared with the specific value to select and determine two pieces of data except only the data having the best evaluated value.