Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2007-09-04
2007-09-04
Choe, Henry (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S297000
Reexamination Certificate
active
11156645
ABSTRACT:
In an amplifier circuit with reduced power-off transients, an amplifier is provided for receiving an input signal and a reference signal to generate an output signal therefrom when it is enabled, and the amplifier is disabled when the supply voltage to the amplifier drops down to a threshold or to a level higher than the reference signal a threshold. The output stage transistor of the amplifier is applied with a body voltage to suppress the body diode parasitic to the output stage transistor to be forward-biased.
REFERENCES:
patent: 5151942 (1992-09-01), Sasaki
patent: 6208203 (2001-03-01), Jung et al.
patent: 6215339 (2001-04-01), Hedberg
Chang Chun-Hung
Chen Fu-Yuan
Wang Shu-Hua
Analog and Power Electronics Corp.
Choe Henry
Rosenberg , Klein & Lee
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