an input connector has a positive phase connection of a differenzverstu00e4rkerschaltung connected. a negative phase connection of the differenzverstu00e4rkerschaltung is with the emitterelektrode a transistor which is connected and a ausgangsanschluss with basiselektrode of the most connected.a eingangsseitiger resistance is between the kollektorelektrode of knowledge and the input connector, and a secondary eingangsseitiger resistance is coupled between the input connector and a erdungsleiter coupled. a baseline unbalanced resistance is between the emitterelektrode of knowledge and the erdungsleiter coupled.the kollektorelektrode of transistor which is connected with a lastanschluss.
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