H - Electricity – 02 – M
Patent
H - Electricity
02
M
321/29
H02M 3/24 (2006.01)
Patent
CA 1132194
ABSTRACT OF THE DISCLOSURE A switching regulator includes a DC voltage source having a pair of DC output terminals, a switching transformer having a magnetic core, first and second primary windings and a secondary winding, a first switching transistor connected in series between the pair of DC output terminals through the first primary winding, a second switching transistor connected in series between the pair of DC output terminals through the first and second primary wind- ings, and a rectifier circuit connected across the secondary winding. A pulse width modulator is provided to produce a PWM (pulse width modulated) control signal the duty of which is pro- portional to the voltage of the rectifier circuit, and the PWM. control signal is selectively supplied to one of the first and second switching transistors in response to the low or high cir- cumstance of a load connected to the rectifier circuit. Further, a control circuit is provided so as not to excessively drive one of the first and second switching transistors during the switch- ing operation thereof. -1-
325716
Baba Yasuharu
Nakazawa Hiroshi
Gowling Lafleur Henderson Llp
Sony Corporation
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