switch bounce

switch bounce

The momentary contact separation that is made when a mechanical switch is closed. The contacts actually touch and then bounce away and then touch again dozens of times in less than a millisecond. When mechanical switches are controlled by microcontrollers, the hardware triggers the software to send a message that the switch operation changed. The switch bounce must be taken into consideration; otherwise, multiple on/off messages would be sent when only one is wanted.
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References in periodicals archive ?
Designers were made to experience with such undesirable characteristics as arcing and switch bounce (with their corresponding noise and wear), while accommodating large unwieldy packages in their large power systems.
Parker, "A simple learning control to eliminate RF-MEMS switch bounce," Journal of Microelectromechanical Systems, vol.
To minimize errors from electromechanical switch bounce, the device applies a software debounce filter to each input SSR.