| 摘要 |
PURPOSE:To set a circuit constant without generating distortion in an output signal. CONSTITUTION:At the circuit to extract an output as a differential voltage between the emitters of transistors 7 and 9 having emitter-follower configuration by inputting a signal to the base of the transistor 7 while connecting a common constant voltage source 4 through resistors 3 and 5 to the respective bases of the transistors 7 and 9, the part of the output signal corresponding to an arbitrarily decided voltage range is extracted by a limiter circuit 10, converted to a current by a first voltage/current conversion circuit 11 and fed back to the emitter of the transistor 7, and the output signal from the limiter circuit 10 is supplied through a signal inverter 12 and a voltage/current converter 13 to the emitter of the transistor 9. |
