Invention Grant
- Patent Title: Wide range capacitor standard box
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Application No.: US16253534Application Date: 2019-01-22
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Publication No.: US10930432B2Publication Date: 2021-02-23
- Inventor: Pan Jin , Yanjun Xu , Dian Jin , Pu Lin
- Applicant: CHENGDU KAIPU ELECTRONIC SCIENCE AND TECHNOLOGIES CO. LTD.
- Applicant Address: CN Chengdu
- Assignee: CHENGDU KAIPU ELECTRONIC SCIENCE AND TECHNOLOGIES CO. LTD.
- Current Assignee: CHENGDU KAIPU ELECTRONIC SCIENCE AND TECHNOLOGIES CO. LTD.
- Current Assignee Address: CN Chengdu
- Agency: Central California IP Group, P.C.
- Agent Andrew D. Fortney
- Priority: CN201810088041.9 20180130
- Main IPC: G01R27/26
- IPC: G01R27/26 ; H01G5/38 ; H01G4/38 ; H01G2/10 ; G01R35/02

Abstract:
The disclosure relates to the field of measurement and calibration of capacitance, especially the instrument of transferring capacitance. A wide range capacitor standard box comprises a chassis, 36 physical capacitors, and 4 changeover switches. Output ports are on the front panel of the chassis. 4 dial-switches select the output capacitance in values of 1, 2, 5 times of single-unit capacitance. The changeover switch has input terminals that connect to two electrodes of the physical capacitors, and output terminals that connect to the output ports. Comparing to decade capacitor standard boxes, the present box realizes capacitance outputs from 1 pF˜500 mF in values of 1, 2, 5 times of single-unit capacitance. The present box significantly extends the measurement range of capacitance, and makes the capacitor standard box smaller and lighter. By introducing a compensation function for open and short circuits, it is convenient and suitable for precision measurement.
Public/Granted literature
- US20190237249A1 Wide Range Capacitor Standard Box Public/Granted day:2019-08-01
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