Control circuit for a switching DC to DC Power converter includi

Details Control circuit for a switching DC to DC Power converter includi Control circuit for a switching DC to DC Power converter includi

1988-12-12

1990-05-15

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 21, 363 97, H02M 3338

Patent

active

049263030

ABSTRACT:
A control circuit for a power converter which includes a power transformer having a primary transformer winding for receiving an input voltage signal and a secondary transformer winding for generating an output signal provides control of the on and off time of the power transformer by utilizing a control transformer having a plurality of windings. A switch is provided which is coupled to the control transformer. The switch is conductive to render the power transformer on and when non-conducting renders the powder transformer off. Activacation of the switch is controlled through magnetic coupling between the windings of the control transformer to thereby render the output voltage of the power transformer constant while the switch on time remains constant and the switch off time is variable.

REFERENCES:
patent: 3134940 (1964-05-01), Massey et al.
patent: 3541420 (1970-11-01), Rees
patent: 4323961 (1982-04-01), Josephson
patent: 4347559 (1982-08-01), Sturgeon
patent: 4744020 (1988-05-01), Cavagnolo

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