发明名称 |
Battery operated capacitance measurement circuit |
摘要 |
A capacitance measuring circuit uses only a DC voltage source to perform the capacitance measurement. For this purpose, the circuit is arranged to charge an unknown capacitor which is being measured from a DC source and to discharge the capacitor through a constant current circuit such that the discharge voltage across the capacitor decreases linearly from its initial value to a predetermined, final value. The measurement circuit monitors the time taken by the capacitor to discharge in order to determine the capacitance value.
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申请公布号 |
US5294889(A) |
申请公布日期 |
1994.03.15 |
申请号 |
US19920858857 |
申请日期 |
1992.03.27 |
申请人 |
TANDY CORPORATION |
发明人 |
HEEP, JERRY J.;CURTIS, DOUGLAS R. |
分类号 |
G01R27/26;(IPC1-7):G01R27/26 |
主分类号 |
G01R27/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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