Which EMC (electromagnetic compatibility) devices are helpful for the design and modification of electromyography (EMG) machines?

EMC rectification of an electromyography (EMG) machine requires balancing stimulator interference with amplifier sensitivity. A bidirectional TVS diode (e.g., SMDJ24CA) can be connected in parallel to the H-bridge driver output of the stimulator to absorb reverse peak voltages generated by inductive loads (e.g., coils). The rise/fall times of the stimulation pulse can be mitigated by connecting a small resistor in series and adding an RC buffer circuit, thereby reducing high-frequency radiation. For weak EMG signal acquisition channels, placing a small capacitor (e.g., 10pF) and a low-capacitance ESD diode (ESD5V0D3) from each input pin to ground can filter out high-frequency noise and provide electrostatic protection. The metal casing of the entire machine should act as a shield; all cables (power, data) passing through the casing must be shielded and have filtering modules installed at their entry points.