PWM/linear driver for an electromagnetic load
US6804131B2 · kind B2 · utility
20Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/034
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates a Pulse Width Modulation (PWM)/linear driver for an electromagnetic load by a bridge circuit of the type having a signal input and a signal output and at least two conduction control inputs for driving a voice coil motor in a linear mode and in a pulse width modulation. The bridge circuit is driven by a PWM converter coupled to one of said two control inputs and by a linear amplifier coupled to the other of said two control inputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.