Abstract：Aim at the troubles of numerous process and unideal measuring results for finding performance of DC power supply,A realization of automatical measurement using single chip computer is described in this paper.All the instruments required such as self-coupling booster ,powerful rheostat,AC voltage meter,precision DC voltage meter, precision DC current meter,AC milli-voltage meter are designed as intelligent instruments.power AC signal needed for DC power supply automatically outputs, the voltage outputs of DC power supply is also measuring automatically,at the same time,the performance index of DC power supply under test is calculated and displayed on the LCD screen.the measuring sesults may be also printed by micro-printer if you need.
2007, Vol. 1 
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