Temperaturwächter (mit 2 Indikatoren (oberer, unterer Grenzwert))

This class B amplifier has a few characteristics that makes it stand out from the crowd. For one thing, not only is the final stage symmetrical and complementary, but all of the other stages are as well. The differential input stage requires an extra outlay of about 40 p, when compared with an asymmetrical preamplifier stage. The balanced design abolishes the need of expensive (and unreliable) coupling and decoupling capacitors. The loud- speaker connects straight to the final stage.