| 摘要 |
PURPOSE:To prevent a video buzz sound caused by detouring from a power source system from being generated by eliminating a power source ripple generated owing to a video signal by the television receiving device without adding any special circuit. CONSTITUTION:In the television receiver, the output stage of a video IF circuit 4 and a video amplifier circuit 8 at its trailing stage are constituted by using an NPN transistor(TR) amplifier circuit (Q1 and R1) and a PNP TR amplifier circuit (Q2 and R2), and video signals having the same polarity are supplied to both the TR amplifier circuits; and the voltage from the same power circuit 9 with a tuner 2 and the video IF circuit 4 is used as a power source for both the TR amplifier circuits. |
