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Circuit Protection Can't Be an Afterthought
8/14/2012

Polyfuse LoRho SMD Resettable PPTC Resistors provide over-current protection and automatic reset for handhelds.   (Source: Littelfuse Inc.)
Polyfuse LoRho SMD Resettable PPTC Resistors provide over-current protection and automatic reset for handhelds.
(Source: Littelfuse Inc.)

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JamesCAnder
User Rank
Iron
Re: CIRCUIT PROTECTION
JamesCAnder   11/9/2012 2:27:48 AM
NO RATINGS
A fire control panel was not working and I was tasked with fixing it. I discovered that a large mechanical relay was throwing off some energy. In my experiments to discover how much, I ended up routinely disconnecting my mouse and resetting my PC with the relay's discharge.

I added the proper relay suppression system, and the panel work perfectly after.

Unfortunately, I was a victim of the afterthought.

JA

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