Modulator circuit with linear and non-linear control

Details Modulator circuit with linear and non-linear control Modulator circuit with linear and non-linear control

2007-03-07

2008-12-30

Zweizig, Jeffrey S (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

Reexamination Certificate

active

07471133

ABSTRACT:
A modulator control circuit including a linear control circuit, a non-linear control circuit, and a combiner. The linear control circuit has an input receiving a compensation signal indicative of an output parameter and an output providing a first control signal. The non-linear control circuit has an input receiving the compensation signal and an output providing a second control signal. The non-linear control circuit senses transients of the compensation signal not otherwise detected by the linear control circuit and asserts the second control signal indicative thereof. The combiner combines the first and second control signals to provide a pulse width modulation signal for controlling the output parameter, such as output voltage or the like.

REFERENCES:
patent: 6057675 (2000-05-01), Tateishi
patent: 7378889 (2008-05-01), Wu
patent: 2007/0013356 (2007-01-01), Qiu et al.

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