| 摘要 |
PURPOSE:To prevent a picture from being distorted even in case of variation in brightness, by connecting one terminal of the parallel circuit of a resistance and a capacitor to the output terminal of an integrating circuit for flyback pulses in a TV receiver and interposing a diode between the other terminal and an earth point. CONSTITUTION:An integrating circuit 2 which integrates flyback pulses is provided and at the output terminal of the circuit 2, the parallel circuit 6 consisting of a capacitor C5 and a resistance R3 is provided. In this circuit 6, the mean DC level of a saw tooth wave voltage developed at a point B is shifted by a diode D4. Further, the diode D4 suppresses the rear part of the saw-tooth wave voltage below a prescribed value. Consequently, even if the waveform of the flyback pulses is distorted because of the load state of a CRT, no influence is exerted upon an output picture. |
