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A cycloconverter (CCV) or a cycloinverter converts a constant amplitude, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC link (Dorf 1993, pp. 2241–2243 and Lander 1993, p. 181). There are two main types of CCVs, circulating ...
A cycloconverter is also a type of frequency changer. Unlike a VFD, which is an indirect frequency changer since it uses an AC-DC stage and then a DC-AC stage, a cycloconverter is a direct frequency changer because it uses no intermediate stages. Another application is in the aerospace and airline industries. Often airplanes use 400 Hz power so ...
The tap converter is a variation on the cycloconverter, invented in 1981 by New York City electrical engineer Melvin Sandler and significantly functionally enhanced in 1982 through 1984 by graduate students Mariusz Wrzesniewski, Bruce David Wilner, and Eddie Fung.
A cycloconverter constructs an output, variable-frequency, approximately sinusoid waveform by switching segments of the input waveform to the output; there is no intermediate DC link. With switching elements such as SCRs, the output frequency must be lower than the input.
Current Problems in Pediatric and Adolescent Health Care is a monthly peer-reviewed medical review journal covering pediatric and adolescent medicine. It was established in 1970 as Current Problems in Pediatrics , obtaining its current name in 2001.
It is published by Elsevier and is the official journal of the American Academy of Child and Adolescent Psychiatry. The editor-in-chief is Douglas Novins. According to the Journal Citation Reports , its 2014 impact factor is 7.26, ranking it first among 119 journals in the category "Pediatrics". [ 1 ]
The Journal of Child and Adolescent Psychopharmacology is a peer-reviewed medical journal covering psychopharmacology in children and adolescents. It was established in 1990 and is published ten times per year by Mary Ann Liebert. The editor-in-chief is Harold S. Koplewicz (Child Mind Institute).
It was established in 1971 as the Journal of Clinical Child Psychology, obtaining its current name in 2001. It is published by Routledge on behalf of the American Psychological Association's Division 53, the Society of Clinical Child and Adolescent Psychology. The editor-in-chief is Andres De Los Reyes (University of Maryland at College Park).