Author Topic: Non-destructively evaluating the quality of a switch?  (Read 602 times)

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Offline e100Topic starter

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Non-destructively evaluating the quality of a switch?
« on: November 20, 2019, 08:23:31 am »
Is it possible to distinguish good vs poor quality switches based on their contact bounce characteristics?
In other words, is there a typical fingerprint indicative of a poor or well constructed switch?

Also, can you judge the age of a switch based on the way the bounce signature has changed (assuming that it does change) since it was new?

 

Online tggzzz

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Re: Non-destructively evaluating the quality of a switch?
« Reply #1 on: November 20, 2019, 10:14:25 am »
Is it possible to distinguish good vs poor quality switches based on their contact bounce characteristics?
In other words, is there a typical fingerprint indicative of a poor or well constructed switch?

Also, can you judge the age of a switch based on the way the bounce signature has changed (assuming that it does change) since it was new?

First you define what "good" and "poor" mean in your application. (For example, there might just be a different answer for a 5V switch and a 400kV switch, or a keyboard switch and a 25A switch!)

Only after that can you begin to answer your question.

In order to determine the age of your switch, you would have to have measured changes over that particular type of switches' lifetime.
There are lies, damned lies, statistics - and ADC/DAC specs.
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Offline dom0

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Re: Non-destructively evaluating the quality of a switch?
« Reply #2 on: November 20, 2019, 03:33:51 pm »
Also, can you judge the age of a switch based on the way the bounce signature has changed (assuming that it does change) since it was new?

Maybe. Just looking at the contacts would be far easier though.
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