I am using a normally open reed switch for an LED lighting application. The lights are power through a basic AC adapter that outputs 12 volts DC and 1.5 amps. The reed switch I am using has a switching current of 1.5 amps, carry current of 3 amps, and a maximum voltage well above the scenario I am using it for. It is a littlefuse reed switch model MRPR-20-17-23.
The problem I am having is that as I bring the magnet close to the switch, the lights turn on as expected, but there is a very high pitched ringing sound being produced from the reed switch.
I’m not the most proficient in the electrical field and I’m at a loss for what is causing this sound. Could anyone potentially offer me insight as to why this is happening?
I’d be happy to provide more information as needed. I appreciate your help in advance!