Anti-jamming circuit for myoelectricity evoked potential diagram instrument
A technology of evoked potential and instrument amplifier circuit, which is applied in medical science, sensors, diagnostic recording/measurement, etc. It can solve the problems of signal interference, complicated operation, and large volume, so as to improve anti-interference characteristics and suppress common-mode interference , the effect of simple operation
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[0020] For an embodiment of the anti-jamming circuit of the myoelectric evoked potential graph, see Figure 1 to Figure 5 , the circuit connected in sequence from the signal input end of the potentiogram instrument includes: transient voltage protection circuit 1, high-frequency interference filter 2, dual-way symmetrical preamplifier 3, high-pass filter 4, program-controlled instrument differential mode amplifier circuit 5, Program-controlled high-pass filter circuit 6, program-controlled amplifier circuit 7, program-controlled low-pass filter circuit 8, anti-aliasing filter circuit 9, optional power frequency notch circuit 10 and AD conversion circuit 11 to signal processing chip (single-chip microcomputer) 12; in signal processing The chip is provided with a USB interface circuit, and the USB interface circuit is connected with a computer 13 with calculation control software; the signal processing chip also controls and connects a visual stimulator 14, a flash stimulator 15,...
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