Audio amplifier having load adjustment and method for the load adjustment of the audio amplifier

摘要

The invention relates to an audio amplifier (1) for amplifying an input signal into an output signal, comprising an output amplification stage (6), wherein the output amplification stage (6) for the amplification of an intermediate signal into the output signal is designed as an amplifier operating in switching operation, and further comprising a limiter device (4), which from a programming and/or a circuit design point of view is designed to generate the intermediate signal on the basis of the input signal, wherein the level of the intermediate signal is always limited by a maximum load as a function of a settable maximum output and a load impedance which is coupled and/or can be coupled the audio amplifier or equivalent parameter thresholds such that the output signal does not exceed the maximum load at the load impedance, or the equivalent parameter thresholds, independently of the input signal.

主权项

1. An audio amplifier (1) for amplifying an input signal into an output signal, comprising:
an output amplification stage (6) for amplifying an intermediate signal into the output signal that is designed to operate in a switched mode, a control unit (5), a transfer device designed for the manual input of a load impedance and at least one of a maximum output power and a maximum output voltage present at the audio amplifier (1) and, for transfer to the control unit (5), and a limiter device (4) programmed or electronically configured to generate the intermediate signal from the input signal and to limit a maximum level of the intermediate signal as a function of the maximum output power and the load impedance which is coupled or can be coupled to the audio amplifier, or as a function of the maximum output voltage and the load impedance without reliance upon the input signal, wherein the control unit is designed to drive the limiter device (4).