Self-oscillating driver circuit

Details Self-oscillating driver circuit Self-oscillating driver circuit

2006-08-30

2011-11-22

Matar, Ahmad (Department: 2614)

Amplifiers

Modulator-demodulator-type amplifier

C330S108000, C363S020000, C455S260000, C331S017000

Reexamination Certificate

active

08063697

ABSTRACT:
A self-oscillating driver circuit comprises a driver stage, a feedforward path which is coupled to an input of the driver stage, and a feedback path which couples an output of the driver stage to an input of the feedforward path. The feedforward path comprises a feedforward filter which is designed as an active filter. In order to prevent an oscillatory state of the driver circuit at an unwanted frequency, it is proposed that an internal state variable of the feedforward filter be monitored and that the feedforward filter be reset if the value of the monitored internal state variable is outside a predefined range.

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