Current sensing in power tool devices using a field effect transistor
US12105149B2 · kind B2 · utility
0Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2021 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Mar 29, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Power tool devices described herein include a housing, a power source interface, a field effect transistor within the housing connected between the power source interface and a load of the power tool device, and an electronic processor coupled to the field effect transistor. The electronic processor is configured to control the field effect transistor to drive the load and measure a voltage at a terminal of the field effect transistor. The electronic processor is also configured to determine the current flowing through the field effect transistor based on the voltage without using a shunt resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.