APPARATUS AND METHOD FOR CHECKING FOR ELECTRICAL FRIT BREAKDOWN IN KINESCOPES

摘要

An apparatus for checking for electrical frit breakdown in kinescopes includes support means for loosely receiving the kinescope funnel. A floating positioning means closely receives the neck of the kinescope when a kinescope is positioned in the vicinity of the particular location. An orienting mechanism accurately orients the kinescope in the selected orientation and the kinescope is then securely maintained in said location. A fluidlike electrical contact is placed against the outside of the frit seal. A probe having a movable, electrical contact is inserted into the neck of the kinescope, and the movable contact is brought against the conductive coating on the inside of the envelope. A current flow between the movable contact, and the fluid-like contact indicates an electrical frit breakdown.