Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1979-07-16
1980-12-02
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
128712, 128660, G01R 1330
Patent
active
042374065
ABSTRACT:
The equipment serves to control the tracing of a center mark and of an arc of a circle centered on said mark on a fluorescent screen. A first controller adapted to deliver a first deflecting voltage, which determines the x coordinate of said mark, is operable by a knob to effect coarse and fine adjustments of said first deflecting voltage. A second controller adapted to deliver a second deflecting voltage, which determines the y coordinate of said mark, is operable by said knob to effect coarse and fine adjustments of said second deflecting voltage. Change-over means are provided for conditioning said first and second controllers for said coarse and fine adjustments. A third controller serves to control the radius of said circle.
REFERENCES:
patent: 3027485 (1962-03-01), Davis
Blum Theodore M.
Kelman Kurt
Kretztechnik Gesellschaft m.b.H.
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