Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1984-02-28
1986-02-25
Salce, Patrick R.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 97, H02M 545
Patent
active
045731128
ABSTRACT:
A self-excited switching type D.C. power supply for producing a stabilized output signal. The power supply is provided with a rectifier, a primary winding of a transformer, a switching transistor and a resistor connected in series with one another between first and second input terminals of the power supply. The transformer is further provided with a secondary winding, a Zener diode, a capacitor and a resistor connected in series with a photocoupler. The photocoupler is connected in series with a pair of control transistors which control the operation of the switching transistor. The switching frequency of the switching transistor is stabilized by providing a quiescent time period during which the switching transistor is disabled.
REFERENCES:
patent: 3504263 (1970-03-01), Schaefer
patent: 4058758 (1977-11-01), Peterson
patent: 4084219 (1978-04-01), Furukawa et al.
patent: 4210947 (1980-07-01), Koizumi
patent: 4378586 (1983-03-01), Bete
patent: 4420804 (1983-12-01), Nishino
Nishiyama Yoshiaki
Numata Kunio
Hawk Jr. Wilbert
Lavin Richard W.
NCR Corporation
Rebsch D. L.
Salce Patrick R.
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