Patent ID: 9250590
Filing Date: 2016-02-02
CPC Classification: G03G

Claim Text:
1. A power supply device comprising: a voltage output unit configured to output a DC voltage corresponding to a control signal from a first controller; an output extractor configured to output an output analog voltage, the output analog voltage being a voltage that is decreased at a certain ratio from the DC voltage output from the voltage output unit; an output evaluator configured to perform a judgment process of judging whether or not the DC voltage is a voltage corresponding to a set value received from the first controller, and to output a result of the judgment to the first controller; a constant voltage generator configured to generate a constant voltage and output the constant voltage to the output evaluator; and a board having the voltage output unit, the constant voltage generator and the output evaluator provided thereon, wherein the output evaluator includes: wherein the correspondence information is preset and is based on measured circuit component characteristics of the board, and wherein the correspondence information of the board differs from the respective correspondence information of another board due to manufacturing variations of the board as compared to the another board.