| 摘要 |
A controlled hysteresis integrated circuit switching circuit wherein a bias signal and an input signal are connected in opposition across the input of an operational amplifier. A current source establishes the bias signal across a bias resistor. When the input signal overcomes the bias signal, the amplifier begins to change state. The output of the amplifier controls an active feedback network and, as the amplifier changes stage, a predetermined amount of current is switched to the bias resistor in opposition to that supplied by the current source to reduce the magnitude of the bias signal.
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