Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1993-10-19
1995-07-18
Callahan, Timothy P.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
327133, 327103, H01J 102, H03K 490
Patent
active
054344832
ABSTRACT:
An automatic compensation circuit for the horizontal deflection of a multifrequency computer monitor includes a transformer which has a primary winding and a secondary winding, a reverse coil which is reversely wired with respect to the secondary winding of the transformer being connected to the secondary winding of the transformer, a capacitor being serially connected between the reverse coil and a ground, a voltage/current converting circuit electrically connected to the first winding of the transformer, and a frequency/voltage converter being electrically connected between a computer monitor and the voltage/current converting circuit for converting the horizontal frequency of the computer monitor to a corresponding voltage and transmitting the converted voltage to the voltage/current circuit. The voltage/current converting circuit receives the converted voltage and responds to generate a corresponding current to actuate the transformer to generate a corresponding resonant frequency to compensate the horizontal deflection of the computer monitor.
REFERENCES:
patent: 4274016 (1981-06-01), Ghahramani
patent: 4707640 (1987-11-01), Onozawa et al.
patent: 4761587 (1988-08-01), Wharton
patent: 4829414 (1989-05-01), Yook
patent: 5325025 (1994-06-01), Gawell et al.
Liu Kwen-Yung
Yang Hsing N.
Callahan Timothy P.
Englund Terry L.
Sampo Technology Corp.
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