Electrical Generator - AC or DC

This Java applet simulates a generator which is reduced to the most important parts for clarity. Instead of an armature with many windings and iron core, there is only a single rectangular conductor loop; the axis the loop rotates on is omitted.

The buttons in the top right corner allow you to choose an AC generator (without commutator), or a DC generator (with commutator). You can change the direction of rotation by using the corresponding button. The sliding control lets you vary the rotational speed. You can stop and continue the simulation with the button "Pause / Resume". This, however, does not mean a real stop of the movement, for in this case the induced voltage would be reduced to zero.

Two black arrows mark the momentary direction of movement. You can recognize the magnetic field lines (directed from the red painted north pole to the green painted south pole) by the red color. The blue arrows represent the direction of the induced current (conventional current direction, + to -).

You need a Java enabled browser to be able to see this simulation.

URL: http://home.a-city.de/walter.fendt/physengl/generatorengl.htm
Walter Fendt, May 8, 1998
Last modification: January 15, 1999

Slight modifications to the wording were made by Steve Wirt.

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