Dynamo
Dynamo
!"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110)
Dynamo
A dynamo is an electrical generator that creates direct current using a commutator). Dynamos employed electromagnets for self-starting by using residual magnetic field left in the iron cores of electromagnets (i.e. field coils). If a dynamo were never run before, it was usual to use a separate battery to excite) or flash the field of the electromagnets to enable self-starting. Dynamos were the first practical 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 alternator, and the rotary converter.
Dynamo
Today, the simpler and more reliable alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator). Also, converting alternating to direct current using rectifiers (such as vacuum tubes or more recently via solid state) technology) is effective and usually economical.
Reading List
Report Issue