Controller for vehicle AC generator
US7486052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2007 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2101/45
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller for a vehicle AC generator that allows the aging test time of a CMOS logic circuit to be reduced is provided. The controller includes a specified signal detecting circuit connected to a third external terminal to detect a specified signal, a voltage selector circuit that generates a voltage selector signal in response to the detection output of the specified signal detecting circuit, and a power supply circuit connected to the first external terminal to output, as internal power supply voltage, first power supply voltage in a first state in which the specified signal is not input to the third external terminal and second power supply voltage higher than the first power supply voltage in a second state in which the specified signal is input to the third external terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.