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肌电反馈系统用来指示肌肉活动的等级,由测量邻近肌肉的皮肤表面的电位差获得。换能器置于邻近肌肉的皮肤表面;高输入阻抗差动线性放大器与该换能器连接,用来放大肌肉活动等级电位差;该放大器能消除通常的杂音并使呈现肌肉活动的电位差达到最大值。只要肌肉活动电位差的线性放大超过至少一千次的动态范围,最小的可测量输入电位差就被放大。滤波器连接于放大器的输出端,包括一个或多个带通滤波器,以适应于最大数量肌电活动频率带的通过,滤出不需要的信息和通过予置所需频率范围内的信号。尚有一个衰减滤波器用作衰减信号和通常使用电
The electromyographic feedback system is used to indicate the level of muscle activity, obtained by measuring the potential difference of the skin surface adjacent to the muscle. The transducer is placed on the skin surface adjacent to the muscle; a high input impedance differential linear amplifier is connected to the transducer to amplify the muscle activity level potential difference; the amplifier removes the usual noise and achieves a potential difference that exhibits muscle activity Maximum As long as the linear amplifications of muscle activity potential differences exceed at least a thousandth of a dynamic range, the smallest measurable input potential difference is amplified. The filter is connected to the output of the amplifier and includes one or more band-pass filters to accommodate the passage of the maximum number of myoelectric activity frequency bands, filtering out unwanted information and passing signals in preset desired frequency ranges. There is also an attenuation filter for attenuating signals and commonly used electricity