Detector for detecting the polarity of an alternating signal
US12181499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Jan 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting the polarity of a current or voltage, the detection device including a circuit portion with a detection node configured to produce at the detection node a measurement voltage which is an image of a fraction of the detected current or voltage, and a detection circuit with transistor(s), coupled to the detection node, and provided with amplifier(s), with a comparator transistor having a source gate voltage which depends on the measurement voltage. The comparator transistor further includes a source set at a first fixed potential and a source-gate voltage which depends on the measurement voltage or a gate set at a second fixed potential and a source-gate voltage which depends on the measurement voltage, the detection circuit being configured to compare the measurement potential with a threshold and to output a binary detection signal indicating the polarity of the detected current or voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.