Ultra fast and high efficiency inductive coil driver
US6670796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | May 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/486
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for driving an inductive load includes a high frequency driver and low frequency driver. A low frequency component and a high frequency component is taken from an input signal. The separate low and high signal components are driven by a low frequency driver and high frequency driver, respectively. The outputs of the low frequency and high frequency drivers are combined by combination circuitry. The high frequency component is amplified by the combination circuitry in addition to being combined. The output of the combination circuitry drives an inductive load at fast speeds. The driver circuit of the present invention may be configured to provide low noise at low frequencies, pass band limitations at the load terminal, different AC and DC open loop gains, and other characteristics depending upon system requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.