Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1987-02-27
1988-08-02
Salce, Patrick R.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 49, 358190, 315411, H02M 3335, H01J 2970, H04N 318
Patent
active
047617233
ABSTRACT:
A first run supply voltage is generated, during a power-up mode of a television receiver power supply, by rectifying a retrace voltage in a flyback transformer of a horizontal output stage of the television receiver. The rectified voltage is coupled through a resistor and a diode to a power supply voltage receiving terminal of an integrated circuit that generates a horizontal rate drive signal. The drive signal provides switching timings to the output stage. A standby supply voltage is coupled, during a standby mode, to the terminal. A shunt regulator regulates the voltage at the terminal during both the power-up and standby modes. A transistor having a collector electrode that is coupled to the run supply voltage and a base electrode, that is coupled to the anode of the diode, generates a second run supply voltage that is temperature compensated at an emitter electrode of the transistor.
REFERENCES:
patent: 4392090 (1983-07-01), Rinehart et al.
patent: 4500923 (1985-02-01), Duvall et al.
patent: 4532457 (1985-07-01), Haferl
patent: 4651214 (1987-03-01), Rodriguez-Cavazos
patent: 4656399 (1987-04-01), Testin et al.
A Service Manual entitled Color Television Basic Service Data for RCA television chassis CTC 111 series, published by RCA Corporation, Consumer Electronics, Indianapolis, Indiana, dated 1981.
Henig Sammy S.
Laks Joseph J.
RCA Licensing Corporation
Salce Patrick R.
Voeltz Emanuel T.
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