What Can Be The Cause And What Are The Possible Countermeasures If The M2BJ-B[][] Pushbuttons AC/DC Shared Buzzer Does Not Sound?

Modified on Sun, 11 May, 2025 at 10:21 PM

There is a smoothing capacitor in the internal circuit and it is possible that inrush current has caused the switching power supply to overload, resulting in no outputs.
Possible Countermeasures
1.If there is a switching power supply overload, it is possible to reduce the inrush current by connecting an external limiting resistor (20 to 30 Ω) in series.
2.The M2BJ-B[][]-D for DC only has no inrush current.
 

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