Arc discharge lamp ballast tester

Details Arc discharge lamp ballast tester Arc discharge lamp ballast tester

1977-03-24

1978-06-13

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 2700

Patent

active

040951758

ABSTRACT:
A ballast tester contains a DC detector, a peak voltage detector and a third harmonic detector. The DC detector determines if the ballast being tested can produce a steady DC current and is, therefore, a lag ballast. The peak voltage detector can identify the ballast as a lead ballast, while the third harmonic detector can determine if a lead ballast contains a starting capacitor.

REFERENCES:
patent: 2225346 (1940-12-01), Pierre
patent: 2302230 (1942-11-01), Livingston
patent: 2604511 (1952-07-01), Marzolf
patent: 2685063 (1954-07-01), Alsberg
patent: 2970303 (1961-01-01), Williams

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