Voltage controller implemented in a low operation voltage...

Details Voltage controller implemented in a low operation voltage... Voltage controller implemented in a low operation voltage...

2008-06-10

2008-06-10

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

Reexamination Certificate

active

07385311

ABSTRACT:
When a low operation voltage device is idle and a voltage of an external power supply is larger than a predetermined voltage, a transistor with a high threshold voltage is turned on to provide electric power to the low operation voltage device. When the low operation voltage device is operating and the voltage of the external power supply is not larger than the predetermined voltage, a transistor with a low threshold voltage is turned on to provide electric power to the low operation voltage device.

REFERENCES:
patent: 6420859 (2002-07-01), Tsai et al.

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