Electronic power amplifier stage for use as voltage amplifier for amplifying audio signal, has discrete semiconductor component i.e. transistor, utilized as active circuit element with operating point stabilization via current source

摘要

The amplifier stage has a discrete semiconductor component i.e. transistor, utilized as an active circuit element with operating point stabilization via a constant current source. Current is kept constant by using the constant current source independent of the load by the amplifying transistor, where the amplifier stage is operated as a classic emitter-base circuit. An input signal is injected at an inlet (8) through a capacitor (9). An output signal is coupled with a signal output (5). Current through a resistor (7) is kept constant by using the constant current source.