Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Patent
1980-04-01
1981-11-03
Tokar, Michael J.
Electricity: measuring and testing
Testing potential in specific environment
Voltage probe
324 99D, G01R 3102
Patent
active
042988373
ABSTRACT:
There is disclosed a hand held testing device for measuring different electrical quantities. Two handles equipped with test prongs are interconnected by a cable. A battery and means for charging the same are built into one handle. The other handle is provided with a function selecting switch and a range selecting switch having finger grip elements. Movable switch elements are constructed of contact rollers. The stationary switch elements are commonly formed of a printed circuit board bearing respective contact areas. A second printed circuit board assembly arranged aside the first board carries the main electrical units on one side and a display device with a visible display area on the opposite side. Selector areas assigned to each one of the switches for marking selector positions are arranged on the same side of the handle body as the display area. Test prongs, selector areas and the display area may therefore be viewed together.
REFERENCES:
patent: 3452277 (1969-06-01), Woroble
patent: 3555420 (1971-01-01), Schwartz
patent: 3893028 (1975-07-01), Febvre
Siemens Aktiengesellschaft
Tokar Michael J.
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