Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1998-06-22
2000-04-18
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
315408, 315411, G01R 3122
Patent
active
060519851
ABSTRACT:
A method and apparatus for testing the horizontal drive stage of a cathode ray tube display where the horizontal drive stage has a drive output which is directed to the base of a horizontal output transistor. In the method and apparatus, the output from the horizontal drive circuit is disconnected from the base of the horizontal output transistor and is connected to the apparatus of the present invention. The apparatus includes a load which simulates the load normally provided by the base of the horizontal output transistor. A meter differential amplifier is connected across the load and readings therefrom are projected on a display. The horizontal drive stage is then energized and readings from the display are compared to known operating requirements of the base of the horizontal output transistor.
REFERENCES:
patent: 3423631 (1969-01-01), Geller et al.
patent: 3449623 (1969-06-01), Dietz
patent: 3622883 (1971-11-01), Haire
patent: 4301394 (1981-11-01), Dietz
patent: 5357175 (1994-10-01), Kamada et al.
Kropuenske Glen
Schlag Scott A.
Ballato Josie
Nguyen V.
Sencore Inc.
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