Circuit configuration to detect excess temperature due to current flow
US5990726A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Feb 4, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/0852
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is directed to a circuit configuration for the detection of an excess temperature due to a current flow, in which a first resistor arrangement is thermally coupled to a second resistor arrangement, the resistance value of the second resistor arrangement producing a thermistor action. The current to be evaluated is flown through at least the first resistor arrangement. The first resistor arrangement is comprised of at least one SMD resistor, and the second resistor arrangement of at least one SMD resistor that acts as a thermistor. The second resistor arrangement is electrically connected to at least one contact surface of the printed circuit board which is electrically connected to the at least one SMD resistor of the first resistor arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.