Instructables: exploring - living - led Sun, 26 Mar 2017 16:57:58 PDT BLOX v1.01 Test Tools: A polarity tester
Test Tools: A polarity tester - More DIY How To Projects]]> Goodhart This is a simple but very handy little device to have around the home and workshop, which will help determine the polarity of two wires, or contact points of a DC circuit. EDIT / UPDATE: If you wish to also use this circuit for voltages LOWER then 12 v or so, you may need to install a bypass switch...
By: Goodhart

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Fri, 23 Jan 2009 16:01:56 PST