Car charger with cable and LED activated when devices are connected to connectors
US11146084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power sensing and indication circuit includes a first device connector for charging a first device and having a first pin and a second pin, the first pin of the first device connector being connected to an output voltage port of a controller. The power sensing and indication circuit includes a first amplifier. The first amplifier has an inverting input port, a non-inverting input port and an output port. The power sensing and indication circuit includes a first set of multiple photodiodes for emitting light of a first color and a second set of multiple photodiodes for emitting light of a second color. The power sensing and indication circuit includes at least one of a transistor or a digital circuit to cause the first set of multiple diodes to emit light of the first color or the second set of multiple photodiodes to emit light of the second color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.