| 摘要 |
An electrical signal slope polarity change detector. A circuit for detecting changes in slope polarity of an electrical input signal and for providing an output indication of each slope polarity change. The circuit utilizes an amplifier with negative feedback which changes substantially its value of feedback impedance during a change in slope polarity of the input signal. The input signal is capacitively coupled to the amplifier input. The circuit is, within limits, insensitive to input signal variations in amplitude, frequency, and offset level.
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