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Re: Loss of temp sensors due lighting.
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Posted by Bill on Saturday, 4 July 2009, at 6:15 p.m.,
in response to Re: Loss of temp sensors due lighting., posted by Bob
Bob, my conclusion from Phil's helpful commentary is that I don't even need protection scheme #1, as he already has it on the WEL.
And now I know why I was confused on the DS9097U - it doesn't exist in the WEL.
Lastly, my guess will be that Phil's experiment of placing P67VKE5CA devices at various points within the 1-wire network *may* have some negative affect on the bus' performance. All 1-wire transceivers are sensitive to the capacitance of the bus. Phil's using a more robust 1-wire transceiver than some competing products, and thus the WEL is more tolerant of non-linear and 1-wire topology 'abuses.' But my bet will be that the capacitance of the line may change more than the transceiver can absorb. Putting an oscope on the line, with and without the P6 devices will easily show affect.
Thanks for initiating this dialog.
Best regards,
Bill
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This site is all about building a cool, energy efficient house, that makes maximum use of earth sheltered design, passive solar heating and cooling, geothermal exchange energy management, and right sizing of the house for it's designated use. The home's placement is on a south-facing hillside in Deep Creek Lake, Maryland. This site describes the design process, the technologies used and the expected results. We also have a comprehensive Links Page for anyone who is also interested in designing a similar project.