Handy Polarity Checker

Electrical polarity (positive and negative) is present in every electrical circuit. Electrons flow from the negative pole to the positive pole. In a direct current (DC) circuit, one pole is always negative, the other pole is always positive and the electrons flow in one direction only. In an alterna...
By: Erfinden

Continue Reading »

from Instructables: exploring - technology - robots http://ift.tt/1UFzFm9

Posted in: instructables,Instructables: exploring - technology - robots