Device for measuring a wide range of voltages and for determining continuity using visual and tactile indicators
AssigneeEtcon Corporation
InventorKent L. Earle
Life of this patent
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Abstract
An electrical test device for use by an electrician in testing circuits. The device includes a voltage sensor, display, voltage transducer and steady current source. The voltage sensor measures the voltage between two conductors and provides a signal to the display, which responsively displays the voltage. The steady current source is in series with the voltage transducer, so that the voltage sensor may respond to a broad range of voltages while only a limited amount of current flows through the voltage transducer. Consequently, lower cost components may be used in the voltage transducer.
Claims11
A testing device for electrical conductors, wherein a voltage exists between said conductors, comprising, in combination:
- a voltage sensor for measuring said voltage between said conductors and responsively providing a voltage signal representing said voltage between said conductors;
- a display for receiving said voltage signal from said voltage sensor and responsively displaying a visual representation of said voltage between said conductors;
- a tactile transducer between said conductors for activating in response to said voltage between said conductors;
- and
- a substantially steady current source in series with said tactile transducer for limiting current through said tactile transducer.
Dependencies are inferred from the claim text.