Methods for eliminating common mode interference include
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Methods for eliminating common mode interference include:
(1) shielded twisted pair and effectively grounded
(2) where there is a strong electric field, galvanized pipe shielding shall be considered
(3) keep away from the high-voltage line when wiring, and do not tie the high-voltage power line and signal line together for wiring
(4) do not share the same power supply with equipment prone to interference such as electronic lock
(5) adopt linear regulated power supply or high-quality switching power supply (ripple interference is less than 50mV)
(6) using differential circuit