Leakage current prevention circuit

Details Leakage current prevention circuit Leakage current prevention circuit

2006-11-17

2008-10-28

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S544000

Reexamination Certificate

active

07443228

ABSTRACT:
A leakage current prevention circuit for preventing a power source from being affected by leakage current includes a first transistor, and a second transistor. A gate of the first transistor receives a control signal and a source of the first transistor is grounded. A gate of the second transistor is connected to a drain of the first transistor, a drain of the second transistor is electrically connected to the power source, and a source of the second transistor is connected to a pull-up circuit which is connected to a chipset. When the chipset receives a drive signal, the control signal controls status of the first and second transistors so that the power source provides voltage to the pull-up circuit for the drive signal.

REFERENCES:
patent: 5724297 (1998-03-01), Noda et al.
patent: 6249174 (2001-06-01), Tsunezawa
patent: 6331719 (2001-12-01), Ooishi
patent: 6373328 (2002-04-01), Rapp
patent: 6433584 (2002-08-01), Hatae
patent: 6853574 (2005-02-01), Singhal
patent: 6917555 (2005-07-01), Bedwell et al.

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