Fan speed controlling system
US7323837B2 · kind B2 · utility
3Cited by
3References
17Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | May 29, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | May 29, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fan speed controlling system for a power supply comprises a fan having two pins and a voltage comparator connected to the fan. The voltage comparator comprises a first input terminal for receiving a first reference voltage controlled by an external temperature of the power supply and a second input terminal for receiving a second reference voltage controlled by an interior temperature of the power supply. The voltage comparator outputs a higher voltage of the first and second reference voltage to the fan via the two pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.