Driver element for inductive loads
US4783693A · kind A · utility
6Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1986 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Jul 14, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/641
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This driver element for inductive loads, specifically DC motors, step motors, solenoids, and the like comprises a transistor bridge, each transistor of the bridge being parallel connected to a respective flyback diode ensuring recirculation of the current on switching the transistors off. The diodes are of the Schottky type, so as to ensure reduced switching loss and improved reliability of the element. The Schottky diodes are formed by leaving a non-diffused portion of the collector epitaxial layer through the base and emitter regions up to the device surface so as to contact the emitter metallization layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.