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1. [TowerTalk] Fwd: Relay lightening protection (score: 1): Author: HansLG@aol.com; Date: Wed, 28 Jan 2009 21:25:33 EST; The diodes in ULN2003 are there to protect the switchers in the IC from too high voltage when connected to relay coils etc. It works well provided the "other end" of the diodes are terminated correct; /archives//html/Towertalk/2009-01/msg00405.html (11,291 bytes)
2. Re: [TowerTalk] Fwd: Relay lightening protection (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Thu, 29 Jan 2009 07:09:05 -0800; Which is the "diode across the coil" model that Tyco recommends against. OTOH, as previously mentioned, it might be "good enough". Yeah.. but I'm not sure that life considerations are an issue here.; /archives//html/Towertalk/2009-01/msg00409.html (9,164 bytes)

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