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公开(公告)号：KR820001954B1
公开(公告)日：1982-10-21
申请号：KR790000330
申请日：1979-02-05
Applicant: RCA CORP
IPC: G05F1/58
Abstract: The electronic regulator produces a direct voltage less than the raw direct voltage input. The load on the regulated output is the primary winding of the horizontal output transformer of television horizontal deflection circuit(260). A secondary winding of the output transformer is connected in series with the source of raw direct voltage. An energy storage capacitor is coupled across the secondary winding, and charged by a gated rectifier. The regulated output voltage is taken across the raw direct voltage source and capacitor. An overvoltage protection circuit for protecting against fault conditions is provided.
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公开(公告)号：KR820001090B1
公开(公告)日：1982-06-21
申请号：KR780000180
申请日：1978-01-24
Applicant: RCA CORP
IPC: H04N3/22
Abstract: A circuit to regulate the television track width comprises a first means of negative feedback (40, 54) coupled to a means of variable impedance which comprises a reactive variable impedance coupled to a shunt circuit which draws a charge current from it. The first negative feedback (40, 54) reacts to the charge current to produce a first negative feedback voltage. This voltage increases the value of the reactive impedance when the charge current increases to maintain an appreciably constant track width. The reactive impedance (45, 46, 47) comprises a driven commutator, whose conduction time varies in response to the first negative feedback voltage.
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公开(公告)号：KR820000746B1
公开(公告)日：1982-05-03
申请号：KR780000350
申请日：1978-02-11
Applicant: RCA CORP
Inventor： PEER J
IPC: H04N3/16
Abstract: The horizontal deflection cct. of a color TV receiver includes a horizontal output transformer(42) with a secondary winding across which a voltage is developed and includes a horizontal deflection winding(41) coupled to a pincushion correction winding of a pincushion reactor. In response to the current flowing in the vertical deflection winding(26), the inductance of the pincushion correction winding varies in a manner providing for East-west pincushion distortion correction. For setup in the service mode of operation, the vertical deflection cct.(40) is disabled.
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公开(公告)号：KR800000781B1
公开(公告)日：1980-08-08
申请号：KR760002124
申请日：1976-08-28
Applicant: RCA CORP
Abstract: A television receiver is equipped with a power supply including a 1st. inductor with predetermined inductance and a 2nd. inductor coupled magnetically with the 1st, inductor. The 2nd. inductor provides a deflection oscillator(84) with a 2nd. A. C. electric potential higher than the 1st. selected one. It is characterized that when the inductance of the 1st. inductor drops below the predetermined inductance, the 2nd. A. C. electric potential drops below the predermined 1st. one so that the kinescope(460) & the deflection oscillator(84) may not operate.
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公开(公告)号：KR800000700B1
公开(公告)日：1980-07-21
申请号：KR760000269
申请日：1976-02-05
Applicant: RCA CORP
Inventor： PEER J
IPC: H01J29/56
Abstract: A protecting cct. for reducing the overvoltage and overcurrent generated by deflection windings is included in the deflection amplifier(70), and the cct. had a capacitor(69) for obtaining parabolic voltage waveform proportioning to scanning current passing through the deflection windings and a resistor(25) for coupling the parabolic voltage to the oscillator(10) so that the parabolic voltage is overlapped on the DC operating voltage(V2) of the oscillator(10) to change pezk amplitude of the scanning current.
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Patent Agency Ranking
公开(公告)号：NZ179942A
公开(公告)日：1978-11-13
申请号：NZ17994276
申请日：1976-02-09
Applicant: RCA CORP
Inventor： PEER J
Abstract: In a deflection system including an oscillator and an amplifier providing scanning current for a deflection winding, a parabolic voltage developed at the deflection winding is superimposed on the oscillator direct current operating voltage in such a proportion that an increased parabolic voltage level, indicative of excessive scanning current from either an overscan or low operating frequency condition, causes the oscillator to operate at a higher frequency which decreases the deflection winding current and therefore the parabolic voltage and thereby permits the use of less expensive circuit components having lower maximum voltage level ratings.
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公开(公告)号：BR7500901A
公开(公告)日：1975-12-02
申请号：BR7500901
申请日：1975-02-14
Applicant: RCA CORP
Inventor： PEER J
Abstract: A class D amplifier, suitable for use as a vertical deflection amplifier in a television receiver, includes two transistors coupled to function in a push-pull manner. Two diodes are serially coupled with each other in parallel with the output transistors and are poled to conduct forward current in a direction opposite to the forward current of the two transistors. A junction of the two transistors is coupled to a junction of the two diodes and forms an output terminal to which a deflection winding is coupled. A series of pulses at a first frequency, such as the horizontal deflection frequency or a multiple thereof, are pulse width modulated in accordance with the amplitude of a sawtooth waveform at a second frequency, such as the vertical deflection frequency, in a pulse width modulation stage and are coupled to the input terminals of the two transistors. The two transistors are alternately enabled for conduction by the pulse width modulated signals. During the first half of the vertical scan interval when average deflection current is flowing in a first direction through the deflection winding, the first transistor conducts current in the forward direction and the second transistor and its associated diode conduct current in their reverse and forward directions, respectively. During the second half of vertical scan with the average deflection current flowing in the opposite direction, the second transistor conducts current in its forward direction and the first transistor and its associated diode conduct current in their reverse and forward directions, respectively, for minimizing crossover distortion at the middle of the vertical scan interval.
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公开(公告)号：NZ189550A
公开(公告)日：1982-11-23
申请号：NZ18955079
申请日：1979-02-02
Applicant: RCA CORP
Abstract: An electronic regulator produces a regulated direct voltage less than the raw direct voltage input. The load on the regulated output is the primary winding of the horizontal output transformer of a television horizontal deflection circuit. A secondary winding of the output transformer is connected in series with the source of raw direct voltage. An energy storage capacitor is coupled across the secondary winding, and charged therefrom by a gated rectifier. The regulated output voltage is taken across the raw direct voltage source and capacitor. An overvoltage protection circuit for protecting against fault conditions is provided. The protection circuit includes a diode coupled between the regulated output voltage terminal and the raw input voltage terminal. The diode is normally back-biased and becomes conductive when a fault condition makes the regulated voltage exceed the raw input voltage. A resistor in series with the secondary winding controls circulating currents in the event of an overvoltage fault.
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公开(公告)号：NZ186462A
公开(公告)日：1982-02-23
申请号：NZ18646278
申请日：1978-02-13
Applicant: RCA CORP
Inventor： PEER J
Abstract: A horizontal deflection circuit of a color television receiver includes a horizontal output transformer with a secondary winding across which a voltage is developed and includes a horizontal deflection winding coupled to a pincushion correction winding of a pincushion reactor. In response to the current flowing in the vertical deflection winding, the inductance of the pincushion correction winding varies in a manner providing for East-West pincushion distortion correction. For setup, in the service mode of operation, the vertical deflection circuit is disabled. A circuit, coupled to the pincushion reactor, adjusts the inductance of pincushion correction winding to compensate for a change in the inductance caused by disabling of the vertical deflection circuit for maintaining the voltage across the horizontal output transformer secondary winding substantially unchanged during setup.
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