Electricity: measuring and testing – Electric lamp or discharge device – Electric lamp
Patent
1981-08-17
1985-01-29
Tokar, Michael J.
Electricity: measuring and testing
Electric lamp or discharge device
Electric lamp
324 51, 324133, G01R 31024, G01R 3122
Patent
active
044969058
ABSTRACT:
A testing device for electrically analyzing electrical failures in high pressure sodium lighting fixtures is disclosed. The testing device is inserted in the lighting fixture after the sodium lamp has been removed and contains three indicator lights. The user of the device compares the condition of the indicator lights with a chart on the label of the device to determine the type of failure. The circuit analyzer device will give distinct indications for a defective lamp, a defective circuit starter board, and a defective ballast and capacitor, thereby allowing the user of the device to make any necessary changes in order to return the lighting fixture to service. A pair of rectifier diodes are installed in a reverse direction so that the pulse to the lamp must be at least 2500 volts in order to break over the diodes PRV rating and to light the appropriate indicating lamps.
REFERENCES:
patent: 2705773 (1955-04-01), Ward
patent: 2956229 (1960-10-01), Henel
patent: 4259635 (1981-03-01), Triplett
Forte Don A.
Thompson Michael L.
Halvorsen Ronald M.
Manville Service Coporation
O'Shea Kevin D.
Quinn Cornelius P.
Schulte Timothy R.
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