Transducer circuit

Details Transducer circuit Transducer circuit

H - Electricity

03

F

H03F 3/50 (2006.01) H03F 3/30 (2006.01)

Patent

CA 2108168

(57) Abstract 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 connect- ed 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 cur- rent 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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