Solve.Noise White paper SOLVING NOISE PROBLEMS This white paper describes common causes of noise To solve this problem in DC mechanical relays and and suggests ways to reduce or eliminate noise solenoids, connect a diode backwards across the problems. coil; this clamps the induced voltage kick produced by the coil. Select a diode rated at four Environmental Noise Problems times the coil voltage and ten times the coil current. To eliminate this effect altogether, use solid-……