Electricity: motive power systems – Plural diverse motor controls – Running-speed control
Reexamination Certificate
2008-04-08
2008-04-08
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Plural diverse motor controls
Running-speed control
C700S019000, C388S811000
Reexamination Certificate
active
11435735
ABSTRACT:
A universal driving apparatus of a computer system, including a receptacle, a power switch, an integrator and a comparator, is provided to identify and drive a first fan and a second fan. The receptacle connects to the first fan or the second fan for electricity supply and system control. The integrator integrates speed signals of the first fan and the second fan to output an integrated-speed voltage. The comparator compares the integrated-speed voltage and a comparative voltage to output a comparative signal. Accordingly, the computer system uses the comparative signal to identify the fan type and actuate the first fan or the second fan correctly.
REFERENCES:
patent: 4459519 (1984-07-01), Erdman
patent: 4588934 (1986-05-01), Suzuki et al.
patent: 5577153 (1996-11-01), Bocchiola
patent: 5777817 (1998-07-01), Kim
patent: 2005/0090909 (2005-04-01), Wu
Brandt Michael
Donovan Lincoln
Muncy Geissler Olds & Lowe, PLLC
Tyan Computer Corporation
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