Water immersion detecting circuit
US6603319B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The object of the invention is to provide a water immersion detecting circuit, which is free from false detection and is stable and highly sensitive in operation. There is provide a water immersion detecting circuit provided on a printed board 11 of an electronic unit and used for detecting water immersion of the electronic unit based on a change of resistance generated between a pair of sensor electrodes for detecting water immersion P10, p11, wherein the pair of sensor electrodes P10, P11 are positioned opposite to each other on the printed board 11, and a U-shaped slit (opening) 12 is formed between the sensor electrodes P10, P11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.