Current sense apparatus for battery charger systems
US9859733B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2015 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jan 13, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16519
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current sense apparatus comprises a first switch having a first terminal connected to a power source and a second terminal connected to a battery, a second switch comprising a gate connected to a gate of the first switch and a first terminal connected to the first terminal of the first switch, a first operational amplifier having a first input connected to the second terminal of the first switch and a second input connected to a second terminal of the second switch, a second operational amplifier having an output connected to the gate of the first switch, a first input coupled to the first terminal of the first switch and a second input coupled to the second terminal of the first switch and a reference voltage source connected to one input of the second operational amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.