Circuit for monitoring the operating condition of an electric load
US4583086A · kind A · utility
19Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1982 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Apr 8, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitor is disclosed for monitoring the operation of an electrically powered load, such as a solenoid or a resistance heater. The load is connected across a power source and normally draws current therefrom. An integrated circuit includes means for energizing a load on indicator so long as the load is drawing current. A power on indicator is energized so long as the monitor receives power from the power source. When the monitor senses that current is no longer being drawn by the load it energizes a flashing on-off fault indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.