Transzorb safety

Dec 10, 2011 2 Replies

When using two back to back zeners for overvoltage protection in a high voltage application is there any way to detect an open failure mode? If the transzorb fails open it is then as if it is not even there. I do not see any way to actually test this failure mode continuously.



Does anyone have any tricks that may make it possible or know the probability of an open failure?



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I can't say much about the probability an open failure - it depends on your application - but the following article discusses the use of redundant TVSs.

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-- Joe

On a sunny day (Fri, 9 Dec 2011 22:03:03 -0600) it happened "Jeffery Tomas" wrote in :

Put a neon with a higher voltage over it, it will light up (or perhaps even blow up if you leave out the series resistor).

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