| 摘要 |
(57) In a transducer circuit consisting of a first transistor (T11), to the base of which ran be applied an input signal a second transistor (T12) complementary lo the first (T11), the base of which is connected to the emitter of the first transistor (T11) and the emitter of which is connected to an output terminal (8) via a first resistor (R1), and with a current supply circuit (T13, T14) which controls the flow of current through the emitter-collector paths of the two transistors (T11, T12) it is possible to obtain an output resistance or virtually zero through a second resistor (R2) connected to the emitter of the first transistor (T11) which is connected by the collector-emitter current of the first transistor (T11) to the base of the second transistor (T12). It is of special advantage if the current-mirror transistors have the same polarity as the first or second transistor (T11; T12) allocated to it and through which the same current flows.
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