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Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
A switching regulator is provided with two (double) alternately operated
forward converters, each having its own pair of switching transistors (dual
The switching regulator shown is configured, by way of example, as a
forward regulator. It has two identical forward-operated converters 20 and 21
commonly connected to the rectified unregulated line voltage V1. Each of the
converters 20 and 21 has its own dual-switch configuration Q1 and Q2 thats
drive respective identical transformer coupled circuits 1 and 2. A non-dissipative
snubber (NDS), e.g., snubber 3, is included in each of the converters 20 and 21.
Filter 22 is alternatively driven by converters 20 and 21 via their respective
transformer circuits 1 and 2, shown with single output windings and single diode
rectifiers. The DC voltage produced at output terminal 30 is also sensed by
feedback control system 23 which produces pulse drive signals S1 and S2 for the
dual switches of converters 20 and 21, respectively.
This duaL-switch topology is also applicable to flyback regulators. Moreover,
for current-sharing purposes one or more additional switching devices may be
connected in parallel across each of the converter transistors, e.g., Q1 and Q2.
The double dual-switch topology with the snubbers 3, it can be shown,
provides the same voltage and high power advantages as a full bridge topology
but without the disadvantages of shoot-through, high...