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A regular AC non-simultaneous motor usually can be used as a generator, without any changes to its parts. Induction generators are useful in applications like minihydro power plants, wind turbines, or in reducing high-pressure gas streams to lower pressure, because they can recover energy with relatively simple controls.
"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110) A dynamo is an electrical generator that creates direct current using a commutator.Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current ...
A clock generator is an electronic oscillator that produces a clock signal for use in synchronizing a circuit's operation. The output clock signal can range from a simple symmetrical square wave to more complex arrangements. The basic parts that all clock generators share are a resonant circuit and an amplifier.
The DC generator generates a small amount of electricity, just enough to excite the field coils of the connected alternator to generate electricity. A variation of this system is a type of alternator that uses direct current from a battery for initial excitation upon start-up, after which the alternator becomes self-excited.
An induction generator draws reactive power from the connected system and so cannot be an isolated source of power. In a Synchronous generator (alternator) , the current for the magnetic field is provided by a DC current source , either separate or rectified from the output of the machine using a full bridge rectifier .
A simple analog function generator, circa 1990 A DDS function generator Sine, square, triangle, and sawtooth waveforms In electrical engineering , a function generator is usually a piece of electronic test equipment or software used to generate different types of electrical waveforms over a wide range of frequencies .