| 摘要 |
An ECG system is disclosed having amplification circuitry which, while effectively blocking electrical transients resulting from undesirable low frequency electrical artifacts, nevertheless maximizes the continuity of receipt of desirable heart activity indicating information. The ECG system employees a DC coupled amplifier including an integrating circuit for effectively reducing the DC gain of the amplifier to substantially zero and for providing a pass band gain of about 1,000 at frequencies above about 0.05 Hz. A fast acting saturation sensing circuit is also incorporated. The saturation sensing circuit resets the integrating circuit to offset any artifact produced signal and to thereby minimize loss of the desired ECG hear activity indicating information.
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