Motor current sense circuit using H bridge circuits
US5773991A · kind A · utility
866Cited by
19References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit is used for sensing motor current. This circuit maximizes the power delivered to the motor whose current is being sensed. Further, this circuit results in maximum voltage drop across the motor. This circuit implements a mirrored H-bridge to mirror a current flowing through a conventional H -bridge having a sensing resistor in series with a VCM motor. The voltage drop across the sensing resistor serves as an indication of the current flowing
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.