Method for detection of failed heater in a daisy chain connection
US5767781A · kind A · utility
16Cited by
11References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1995 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jun 15, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Currents input to and output from a device, such as a heater, in a daisy chain connection are measured and compared. Failure of an individual device, as well as device location, is indicated if no current is consumed by the device. A latch is activated in response to detection of a non-functioning device, sending a signal that gives notice and location of the failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.