Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1986-11-12
1987-11-17
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
363 24, H02M 7538
Patent
active
047077760
ABSTRACT:
In the primary circuit of dc-to-dc converter or a dc-to-ac converter, transistor switching units are associated with two primary windings of a transformer. The transistor switching units each control the flow of current through an associated winding. The first transistor is activated by apparatus that alternatively applies and removes activation signals to the transistor and consequently allows conduction through the transistor and the associated winding. The second transistor receives activation signals from a third primary winding and causes conduction of current through the associated primary transformer winding. The activation signal from the third winding, causing the second transistor to be conductive, is the result of interruption of current in the first primary transformer winding. The activation signals produced by the third primary transformer winding is removed when the first transistor is activated and current is flows in the first primary winding.
REFERENCES:
patent: 3569816 (1971-03-01), Marzolf
patent: 4061957 (1977-12-01), Vader
patent: 4095128 (1978-06-01), Tanigaki
patent: 4390937 (1983-06-01), Clark
Beha Jr. William H.
Burr-Brown Corporation
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