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公开(公告)号：FI771239A
公开(公告)日：1977-10-27
申请号：FI771239
申请日：1977-04-19
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: In a switched vertical deflection circuit, two SCR switches couple horizontal retrace pulses to a capacitor. A modulator couples pulse width modulated gating pulses to the SCR's. The SCR's couple to the capacitor successively smaller portions of the horizontal retrace pulses during a first part of the vertical trace interval and successively larger portions during a second part for developing in a vertical deflection winding a sawtooth vertical deflection current. The modulator couples gating pulses to one of the SCR's during the vertical retrace interval for substantially loading the horizontal deflection circuit during the vertical retrace interval for preventing undesired oscillations within the horizontal deflection circuit.
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公开(公告)号：DE2712042A1
公开(公告)日：1977-09-22
申请号：DE2712042
申请日：1977-03-18
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
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公开(公告)号：AU8753775A
公开(公告)日：1977-06-23
申请号：AU8753775
申请日：1975-12-15
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: A deflection circuit wherein coupling capacitors are placed in series with the transformed yoke impedance to reduce capacitance values and voltage ratings of these capacitors. One of the coupling capacitors also serves to integrate a centering current developed by a centering circuit, thereby providing for a relatively uniform direct current component through the yoke windings throughout each horizontal line of scan.
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Patent Agency Ranking
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公开(公告)号：AU7539474A
公开(公告)日：1976-05-20
申请号：AU7539474
申请日：1974-11-15
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: First and second amplifiers which consume varying currents are combined in such a manner as to require a common substantially constant power supply current. An energy storage device coupled to both amplifiers stores energy during periods of low current consumption by the first of the amplifiers. This stored energy is then provided for the second amplifier during periods of high current consumption by the first. A control circuit is provided which allows the first amplifier priority in fulfilling its current requirements.
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公开(公告)号：DE2405482A1
公开(公告)日：1974-08-08
申请号：DE2405482
申请日：1974-02-05
Applicant: RCA CORP
Inventor： HAFERL PETER EDUARD
Abstract: An amplifier derives a substantially constant current from a direct current voltage source. A first output transistor is coupled in an emitter follower configuration and is biased to provide the desired constant current consumption of the amplifier at zero input signal voltage. The load circuit is alternating current coupled to its emitter. The collector of a second output transistor is also coupled to the emitter of the first output transistor. The emitter of the second output transistor is coupled to the remaining terminal of the load. This junction is coupled through a monitor resistor to a point of reference potential. The monitor resistor monitors the current consumed by the amplifier and the voltage across it controls a third current regulator transistor which is coupled to the base of the second output transistor and controls its conductivity.
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