RECTIFYING CIRCUIT

摘要

PURPOSE:To eliminate the influence of the momentarily interfering signal arriving immediately before input AC signal by making a fixed space of time is necessary after the impression of AC input signal until the DC signal generated at an output terminal reaches normal value. CONSTITUTION:When an AC signal (a) of amplitude voltage is impressed to a terminal 1, a positive harf-wave output signal (b) is fed to a terminal 3 and the peak value of the voltage thereof becomes equal to amplitude value Vi. The signal is made of DC and AC components proportionate to the peak value. The AC component is attenuated by a smoothing circuit consisting resisters R3 and R4 and a capacitor C2 and DC component requires a fixed space of time until reaching normal voltage value due to the integral action of the smoothing circuit so that DC signal fed to the terminal 4 becomes similar to signal (c). Even if momentarily interferring signal has reached a terminal 1, the output voltage of the terminal 4 does not immediately follow up the signal so that it is prevented to exert an influence on the normal voltage of the DC signal outputted upon the next arrival of normal AC signal.