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DIY thermal differential controller (solar hot water pump controller)
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10-05-09, 01:03 PM
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Xringer
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
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Hey, I wonder if that LM324 chip is the same as the 324 chip in my antique 1981 controller?
Of course mine requires no soldering.
It's just plug-n-play!
Xringer
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