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公开(公告)号：GB2150796B
公开(公告)日：1988-03-30
申请号：GB8429413
申请日：1984-11-21
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: In a deflection circuit, a flyback transformer and a retrace resonant circuit that includes a deflection winding are mutually coupled by a relatively small capacitor during the retrace interval so as to reduce transient distortions that may be caused by a sudden high beam current change. East-west modulation is provided to the deflection circuit output stage via an impedance having a relatively large value at the retrace frequency. A resonant circuit that includes the deflection winding and the flyback transformer is tuned to the retrace frequency. Synchronization information of the current through the deflection winding may be derived from a winding of the flyback transformer.
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公开(公告)号：IT1178751B
公开(公告)日：1987-09-16
申请号：IT2397384
申请日：1984-12-10
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
IPC: C01B33/00 , B01J20/10 , B01J21/08 , B01J29/04 , B01J29/86 , C01B33/02 , C01B33/12 , C01B33/20 , C01B35/10 , C01B35/12 , C01B39/00 , C01B39/04 , C01B39/08 , C01B39/12 , C07B61/00 , C07C1/00 , C07C1/20 , C07C2/66 , C07C2/86 , C07C15/067 , C07C27/00 , C07C29/10 , C07C29/128 , C07C31/04 , C07C67/00 , H04N3/16 , H04N3/185 , H04N3/22 , H04N3/223 , H04N
Abstract: An energizing voltage is series coupled with a diode, an inductor, a flyback transformer primary winding and an input terminal of a deflection circuit. During trace, the diode is forward biased causing a voltage to be developed across and an input current to flow in the inductor. During retrace, opposite polarity retrace voltage commutates off the diode and decouples the input terminal from the energizing voltage at a varied instant within retrace, in accordance with the amplitude of the input current. The amplitude of the input current is related to the ultor load current. A voltage that is indicative of the input current is developed across a capacitor. A DC voltage between one plate of the capacitor and a reference conductor controls the deflection current in the deflection winding such that variations in the ultor voltage produce the same sense variations in the DC voltage that is supplied by the capacitor for maintaining a substantially constant raster width.
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公开(公告)号：DE3465232D1
公开(公告)日：1987-09-10
申请号：DE3465232
申请日：1984-02-15
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
IPC: H04N3/16
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Patent Agency Ranking
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公开(公告)号：IT1176367B
公开(公告)日：1987-08-18
申请号：IT2168084
申请日：1984-06-29
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: A deflection circuit (39) is coupled to a horizontal deflection winding (Ly) for generating scanning current in the winding. A retrace pulse voltage is developed across the deflection winding (Ly) during the retrace interval. A flyback transformer (T1) is coupled to the deflection circuit (39) and has retrace pulse voltages developed across windings thereof. A source (19) of supply energy is coupled to a first winding (W1) of the flyback transformer (T1) and a load circuit, such as a high power audio circuit (36), is coupled to a second winding (W4) of the transformer and draws load current therefrom. A switched mode power supply (S1,S2) is coupled to the source (19) of supply energy and to the flyback transformer (T1) for controlling the transfer of energy between the source (19) and the load circuit (36). A compensation circuit (30) responsive to the operation of the switched mode power supply produces variations in current in an inductance (L2) coupled to the flyback transformer (T1). These variations are indicative of variations in load current drawn by the load circuit (36). The flyback transformer (T1) couples the inductance (L2) to the retrace resonant circuit (Cr) for a variable amount of time during retrace to control the transformer trace-retrace duty cycle in a manner that compensates for retrace time modulation due to loading variations.
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公开(公告)号：DK100187D0
公开(公告)日：1987-02-26
申请号：DK100187
申请日：1987-02-26
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
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公开(公告)号：DK150437B
公开(公告)日：1987-02-23
申请号：DK68376
申请日：1976-02-19
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
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公开(公告)号：AT24367T
公开(公告)日：1987-01-15
申请号：AT82300747
申请日：1982-02-15
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: A deflection generator of a television receiver is coupled to a deflection winding for generating scanning current during a deflection cycle. The generator includes a retrace capacitor coupled to the deflection winding for forming a retrace resonant circuit therewith to produce a retrace pulse voltage during a retrace interval of the deflection cycle. An inductor and another capacitor form a second resonant circuit that is coupled to the retrace resonant circuit. A switching arrangement is coupled to a source of energy and the second resonant circuit in a push-pull configuration. The switching arrangement is responsive to a deflection rate switching signal to store during trace a controllable amount of energy from the source in the second resonant circuit. This stored energy is then transferred to the retrace resonant circuit during the retrace interval to replenish losses sustained during the deflection cycle.
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