Fuse checker for testing integrity of a miniature, plug-in fuse

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

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Details

324507, 324133, 340638, G01R 3102

Patent

active

053111397

ABSTRACT:
A fuse checker particularly adapted for use with miniature, plug-in fuses for testing the fuses while the fuses are in operative position in an electrical circuit. The checker includes a housing from which extend a pair of parallel contact points adapted for engagement with terminal tabs that lie within terminal access openings in a fuse housing. A ground lead is provided for completing the circuit, which includes a pair of light emitting diodes that have their lenses positioned to form part of the surface of a checker housing. A separate, current limiting resistor is applied between a respective LED and one of the contact points and the ground lead. The checker housing can be a hollow structure or it can be solid, to fully encapsulate the circuit elements that are positioned within the housing.

REFERENCES:
patent: 1109450 (1914-09-01), Mitchell
patent: 2186212 (1940-01-01), Scoggin
patent: 2229927 (1939-09-01), Kamper
patent: 3323041 (1967-05-01), Warner
patent: 3820017 (1974-06-01), Reichenbach
patent: 4107602 (1978-08-01), Evans

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