Electrical continuity tester for the connection of a terminal and an insulated lead
US4654580A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1984 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Jun 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Electrical continuity between an electrical terminal and a metal core of an insulated electrical lead is tested for, by supplying substantially identical oscillatory signals to the arms of a two-arm bridge circuit, the arms of which are connected to respective inlets of a differential amplifier, the arms being grounded through capacitances and a ground plane existing in the vicinity of the lead. If there is electrical continuity between the terminal and said core, the capacitance between the core and the ground plane causes imbalance between the signal inputs that are applied by the bridge circuit to the differential amplifier to cause it to emit a continuity success signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.