Modulator

Details Modulator Modulator

2008-01-15

2008-01-15

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

11163729

ABSTRACT:
The present invention describes a modulator including a differential amplifier connected to a reference voltage and a first transistor, and the first transistor is connected to a feedback device, and a second transistor is set between the first transistor and the differential amplifier and connected to a voltage detector and a diode, and the diode is connected to a power supply, and the voltage detector keeps on detecting an output voltage (VOUT) between the feedback device and the first transistor. If the output voltage (VOUT) value is lower than a predetermined voltage value of the power supply, the voltage detector will issue a signal to drive the second transistor and limit a gate-source voltage (VGS) of the first transistor within a voltage difference of the diode, so as to reduce the impetus of the first transistor and avoid the phenomenon of a sudden climb with an excessively large output voltage (VOUT).

REFERENCES:
patent: 5689460 (1997-11-01), Ooishi
patent: 5945819 (1999-08-01), Ursino et al.
patent: 6529563 (2003-03-01), Mosinskis et al.
patent: 2003/0090251 (2003-05-01), Nakashimo

Affiliated with

Also associated with

Rating

Modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3932061