2. Alternating signal generation
It's relatively easy to create an energy source with a constant output. This is the case of the battery in electricity. On the other hand, creating a source with periodic output requires an additional mechanism to convert a DC signal into an AC signal. In the case of the dynamo, the energy expended continuously by the cyclist and producing uniform motion is converted into an electrical signal with a period related to the speed of rotation of the wheel and dynamo. The following paragraphs describe the various mechanisms for converting a DC signal into an AC signal.
2.1 Advances in the generation of alternating electrical signals
The first experiments with alternating currents date back to the mid-19th century, and led to Hertz's discovery of electromagnetic waves...
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Alternating signal generation
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