Failed diode indicator

Details Failed diode indicator Failed diode indicator

1977-07-25

1979-02-27

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

73356, 116216, 324 51, 340645, G01R 3102

Patent

active

041421515

ABSTRACT:
A shorted diode in an array of parallel diodes is detected by connecting between normally equipotential points in each pair of adjacent branch circuits of the array an inexpensive indicating device comprising signaling means for visually indicating that a malfunction has occurred if appreciable current flows in an associated resistor. The signaling means comprises heat sensitive material that changes appearance when its temperature is raised to a predetermined high degree by the heat generated in the resistor when current flows between the aforesaid connection points due to the potential difference that develops therebetween as a result of a diode failing shorted.

REFERENCES:
patent: 2550119 (1951-04-01), Marbury et al.
patent: 2673325 (1954-03-01), Orr
patent: 3052840 (1962-09-01), Michaelis
patent: 3200392 (1965-08-01), Chumakov
patent: 3305773 (1967-02-01), Beaty
patent: 3396335 (1968-08-01), Burr et al.
patent: 3718920 (1973-02-01), Grenier
patent: 4017795 (1977-04-01), Milligan
patent: 4053876 (1977-10-01), Taylor

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