Control apparatus for automotive generator
US7034508B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2005 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Oct 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An A/D conversion device includes a counter for counting a clock signal fed from a clock signal generator, a D/A converter for converting a digital output of the counter into an analog value, a comparator for comparing an analog output of the D/A converter and an analog field current detection value fed from a current detecting resistor and outputting a result of comparison, and an up/down control circuit for switching the counter between count-up and count-down operations according to the result of comparison output from the comparator. The output of the counter is transmitted as a digital field current detection value to an external control unit which is an ECU of a vehicle via a communication interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.