Electrical continuity tester
US7633298B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2007 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jan 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R2103/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A continuity tester for a lamp, coaxial, plug connector has a receptacle connector with first and second coaxial, annular receptacle contacts at a same axial spacing apart as power and ground contacts of the lamp connector for electrical engagement when plugged therein and, a probe contact engageable with only the power contact. First and second LEDs connect to a battery via first and second parallel circuits. A biasing resistor in the second circuit ensures that battery power is provided to only the first LED when a battery circuit is completed only by electrical engagement of the first contact and the probe contact with the power contact of the male coaxial connector to signal absence of a short circuit and to only the second LED when a circuit is completed also by engagement of the second tester contact with the ground contact of the lamp connector to signal a short circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.