Method of checking for electrical frit breakdown in kinescopes a

Details Method of checking for electrical frit breakdown in kinescopes a Method of checking for electrical frit breakdown in kinescopes a

1980-07-21

1982-05-11

Tokar, Michael J.

Electricity: measuring and testing

Electric lamp or discharge device

Cathode-ray tube

324 72, G01R 31024

Patent

active

043296483

ABSTRACT:
A method for checking for electrical frit breakdown in kinescopes uses a novel probe which is dimensioned to enter into the neck of the kinescopes without contacting the interior of the neck. A movable electrical contact is actuated to a position against the conductive coating on the inside of the tube. A high voltage supply is connected between the movable contact and the frit seal and current flow indicates an electrical frit seal breakdown.

REFERENCES:
patent: 2582822 (1952-01-01), Evans
patent: 2637005 (1953-04-01), Hood et al.
patent: 2860302 (1958-11-01), De Gier
patent: 2978637 (1961-04-01), Price et al.
patent: 3417327 (1968-12-01), Breidenbach

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