Patent ID: 9208944
Filing Date: 2015-12-08
Classification: G01R,H01G

Abstract:
1. A capacitance standard box output device, comprising a changeover switch and precision capacitors, wherein: the changeover switch is placed in a shield box; the shield box has an input terminal and an output terminal; the input terminal is connected to the changeover switch and the precision capacitor; the output terminal is connected to the changeover switch and outputs the capacitance selected by the changeover switch; the selected capacitance is a product of an arbitrary integer value between 0 and 10 and a unit capacitance; the precision capacitors are arranged in at least one layer; the number of the precision capacitors in the at least one layer is from 4 to 9; at least one of the precision capacitors in the at least one layer is one unit capacitance; and the capacitance of a second one of the at least one of the precision capacitors in the at least one layer is N times as big as one unit capacitance, wherein N is an integer, and N≧2.