Which EMC (electromagnetic compatibility) components are helpful for the design and modification of infrared therapy devices?

The EMC design of infrared therapy devices is relatively simple. If a switching power supply is used, a small EMI filter needs to be installed at its input. If a thyristor is used for phase modulation, an RC absorption circuit (e.g., a 471 resistor + 104 capacitor) should be connected in parallel between the T1 and T2 terminals of the thyristor, and an inductor or choke should be connected in series at the power input to suppress current surges. The inside of the device casing (especially plastic casings) can be coated with conductive paint and grounded to reduce radiated emissions. ESD protection devices (e.g., ESD5V0D5B) can be added to the circuitry of the tactile switches and indicator lights on the control panel.