Switch control circuit and igniter
US11448178B2 · kind B2 · utility
0Cited by
70References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | May 10, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0456
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A switch control circuit controls a switch element connected to a primary coil of an ignition coil in accordance with an ignition signal. The switch element includes a transistor and a protection element connected between a collector and gate of the transistor. The switch control circuit uses a voltage at a gate terminal controlling the transistor or a voltage corresponding to a collector current of the transistor as a detection voltage and generates a status detection signal corresponding to a change in the detection voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.