-
公开(公告)号：EP0970387A1
公开(公告)日：2000-01-12
申请号：EP99901136.4
申请日：1999-01-22
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A static capacitance-to-voltage converter is capable of converting a static capacitance into a voltage without suffering from a stray capacitance formed between a signal and a shielding line or a stray capacitance formed between an exposed portion of the signal line and its surroundings. The static capacitance-to-voltage converter is formed of an operational amplifier placed in an imaginary short-circuit state between an inverting input and a non-inverting input thereof; a signal line having one end connected to the inverting input and the other end capable of being connected to a static capacitance; a shielding line surrounding the signal line and connected to the non-inverting input; an alternate current signal generator for applying the non-inverting input with an alternate current signal; and zero adjusters for adjusting the output of the static capacitance-to-voltage converter to minimum when no static capacitance is connected to the signal line.
-
公开(公告)号：EP0970387B1
公开(公告)日：2006-05-10
申请号：EP99901136.4
申请日：1999-01-22
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A static capacitance-to-voltage converter is capable of converting a static capacitance into a voltage without suffering from a stray capacitance formed between a signal and a shielding line or a stray capacitance formed between an exposed portion of the signal line and its surroundings. The static capacitance-to-voltage converter is formed of an operational amplifier placed in an imaginary short-circuit state between an inverting input and a non-inverting input thereof; a signal line having one end connected to the inverting input and the other end capable of being connected to a static capacitance; a shielding line surrounding the signal line and connected to the non-inverting input; an alternate current signal generator for applying the non-inverting input with an alternate current signal; and zero adjusters for adjusting the output of the static capacitance-to-voltage converter to minimum when no static capacitance is connected to the signal line.
-
搜索结果
2 条记录 (耗时 0.011 秒)
