发明授权
US4803423A Input circuit for a probe of a logic analyser and probe and logic
analyser provided with such a circuit
失效
用于逻辑分析仪和探头和逻辑分析仪的探头的输入电路，配有这样一个电路
- 专利标题： Input circuit for a probe of a logic analyser and probe and logic analyser provided with such a circuit
- 专利标题（中）： 用于逻辑分析仪和探头和逻辑分析仪的探头的输入电路，配有这样一个电路
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申请号： US55659申请日： 1987-05-28
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公开(公告)号： US4803423A公开(公告)日： 1989-02-07
- 发明人: Pierre-Henri Boutigny
- 申请人： Pierre-Henri Boutigny
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corp.
- 当前专利权人： U.S. Philips Corp.
- 当前专利权人地址： NY New York
- 优先权： FRX8608185 19860606
- 主分类号： G01R13/28
- IPC分类号： G01R13/28 ; G01R1/067 ; G01R31/3177 ; G06F11/25 ; H03F1/30 ; G01R19/06 ; G01R19/00
摘要：
A high frequency probe for a logic analyzer adapted to operate with different types of logic circuits, and signals which may or may not be superimposed on a dc component. After an input capacitance, a high frequency amplifier feeds both an output terminal and a compensator circuit which compares the deviation between low frequency or dc components appearing at the input and output terminals, and compensates for the deviation by reinjecting a signal at the input of the high frequency amplifier. Variable attenuation may also be also be included between the high frequency amplifier and the output terminal.
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