Voltage tester

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G - Physics

01

R

324/74.2

G01R 19/155 (2006.01) G01R 13/40 (2006.01) G01R 19/14 (2006.01) G01R 19/165 (2006.01)

Patent

CA 1142230

Abstract Disclosed are simple test devices for providing optical indications of any of a number of different voltage ranges. One embodiment comprises a probe in the form of a handle provided with a contact point and containing optical indicating elements such as light emitting diodes. The indicating stages are connected together and each consist of a combination of at least one resistor and an optical indicating element. Non-linear isolation ampli- fiers are connected between the stafes and act to distinguish the voltage applied according to its value in a closer voltage range and energize an associated indicating element.

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