DC SOURCESBasic DC TheoryFigure 1 Basic Chemical BatteryDue to this action, electrons are deposited on the electrode, and positive ions from the electrodepass into the electrolyte solution (Part B). This causes a negative charge on the electrode andleaves a positive charge in the area near the electrode (Part C).The positive ions, which were produced by ionization of the electrolyte, are repelled to the otherelectrode. At this electrode, these ions will combine with the electrons. Because this actioncauses removal of electrons from the electrode, it becomes positively charged.DCGeneratorA simple DC generator consists of an armature coil with a single turn of wire. The armature coilcuts across the magnetic field to produce a voltage output. As long as a complete path is present,current will flow through the circuit in the direction shown by the arrows in Figure 2. In thiscoil position, commutator segment 1 contacts with brush 1, while commutator segment 2 is incontact with brush 2.Rotating the armature one-half turn in the clockwise direction causes the contacts between thecommutator segments to be reversed. Now segment 1 is contacted by brush 2, and segment 2 isin contact with brush 1.ES-02 Page 2 Rev. 0
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