| 摘要 |
PURPOSE:To attain data delay without dispersion or fluctuation by using a charge/discharge capacitor connected to an emitter follower circuit so as to select a discharge emitter follower for each inverting period of an input signal thereby shaping a discharge waveform. CONSTITUTION:When a signal at an input terminal 1 rises and a signal at an input terminal 2 falls at a time T1, the level of the emitter of a 1st transistor(TR) 1 is increased by an amplitude V, a 2nd TR 2 is turned off and an emitter of the TR 2 is increased by the amplitude V by a capacitor C1. Then the emitter potential is linearly decreased by the discharge of the capacitor C1 by a 2nd current source I2 and reaches a same level as the emitter potential of the TR 1 after the time t1, and reaches a level lower than the potential of the terminal 2 by VBE after a time t2, the TR 2 is turned on and the discharge of the capacitor C1 is finished. The operation of the TRs 1, 2 is inverted at the time T2. When an emitter waveform of the TRs 1, 2 is inputted to a limiter amplifier 3, a waveform delayed from the input signal by the time t1 is obtained from output terminals 4, 5. |
