Inductive load drive circuit
US5305176A · kind A · utility
1Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Oct 9, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0552
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An inductive load drive circuit includes a transistor having a collector and emitter current path interposed between an inductive load and a constant current source, and a feedback circuit. The feedback circuit has a Zener diode and a resistor which are connected with each other in series. The feedback circuit is connected between the collector and the base of the transistor. A speed-up capacitor is connected in parallel with the resistor and in series with the base of the transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.