Class 330/120 - Interstage coupling between push-pull

Subclass of Class 330 - Amplifiers
Definition: Subject matter including at least two cascaded stages of
No. of patents: 3
Last issue date: 10/21/2003

Number	Title	Issue Date
6636117	Input/output buffer incorporating filter for powerline communications line An improvement in a buffer for driving a signal onto a power line is described. The buffer includes a second order filter. With the improvement, the collector-to-emitter potential of an emitter follower is maintained constant to substantially reduce the d...	10/21/2003
5382915	Pulsewidth-modulated amplifier having analog mode An audio amplifier (100) switches between a pulsewidth-modulated (PWM) mode to an analog mode when required in order to reduce unwanted EMI when the signals being reproduced fall within a predetermined threshold range such as when reproducing low amplitud...	01/17/1995
4644289	Variable power amplifier for audio frequency signals and method A variable power amplifier having a constant current differential amplifier driving a cascaded driving amplifier, a variable power amplifier including a vacuum tube for selectively amplifying output signals wherein the drive of the variable power amplifie...	02/17/1987

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