Switch bounce



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English: Switch bounce on a HP 54501A digitising oscilloscope. A latching switch was used, one end connected to 12V and the other end to the oscilloscope. The oscilloscope is set to trigger above 3V. As can be clearly seen the switch bounces between (hence the term, switch bounce) on and off several times for at least 1 millisecond after it is switched. The decaying waveform is due to the relatively large capacitance of the switch (a few nanofarads) compared to the relatively high impedance of the oscilloscope (about 1 meg-ohm.)

7 July 2010(2010-07-07)


Own work



(Reusing this file)
Public domain. Picture of oscilloscope. The oscilloscope is running firmware from 1988; I assume it is OK to take a screenshot of a 'scope.
Other versions .


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EXIF data:
File name switch_bounce.jpg
Size, bytes 2249181
Mime type image/jpeg
Camera manufacturer NIKON
Camera model E7600
Orientation of image 1
Image resolution in width direction 72/1
Image resolution in height direction 72/1
Unit of X and Y resolution 2
Exposure time 10/601
F number 28/10
Exposure program 2
ISO speed rating 50
Compressed bits per pixel 2/1
Exif version 0220
Lens focal length 78/10
Date and time original image was generated 2010:07:07 00:34:48
Date and time image was made digital data 2010:07:07 00:34:48
Meaning of each component 
Exposure bias 0/10
Maximum lens aperture 30/10
Metering mode 5
User comments ASCII
Supported Flashpix version 0100
Color space information 1
Exif image width 2592
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InteroperabilityOffset 2250
Scene type 
Digital zoom ratio 0/100
Focal length in 35 mm film 38
Interoperability index R98
Interoperability version 0100
Software used GIMP 2.6.8
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