The invention discloses a video signal output circuit, suitable for the video signal from the main core plate is transmitted to the TV's video interface, realize the impedance is connected with a video display interface, which comprises a signal input circuit, power supply circuit, amplifying circuit and the output circuit; the signal input circuit is connected to the main core the front board, for receiving video signals; and to supply the power to the video signal output circuit; the output end of the power circuit and the amplifying circuit is connected to the signal input circuit, to achieve two times the video signal amplifier; and the output circuit includes matching resistor matching resistor connected in series between the output end of the amplification circuit and the video interface, for partial pressure.
【技术实现步骤摘要】
【技术保护点】
一种视频信号输出电路，适用于将视频信号从电视机的主芯板传输至视频接口，其包括：信号输入电路，连接于所述主芯板，用于传输视频信号；电源电路，其连接于所述信号输入电路的输出端，并给所述视频信号输出电路供电；放大电路，其连接于所述信号输入电路的输出端以及所述电源电路，实现视频信号的两倍放大；以及输出电路，其包括匹配电阻，所述匹配电阻串联于所述放大电路的输出端与所述视频接口之间，用于分压。
【技术特征摘要】
【专利技术属性】
技术研发人员：刘合坚，陈江武，
申请(专利权)人：广州视源电子科技有限公司，
类型：发明
国别省市：81
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