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841型全自动彩色电视差转机,是根据我国电视事业的发展,适应中小型电视台需要的一种单通道式、二次变频、VHF频段的中功率等级全自动彩色电视转播设备。与中频调制器配套可自办电视节目,可转发卫星电视以及微波干线电视节目。具有灵敏度高,AGC控制范围宽,自动开关机稳定、可靠,功率输出大等特点。与国内产品比较,841型机在高频功率放大部分采用FC—11管栅地推挽放大电路独具特色,其设计新颖、实用。本文简述其
841 automatic color TV transfer machine is based on the development of China’s television industry, to adapt to the needs of small and medium television stations of a single-channel, two variable frequency, VHF band of medium-power full-automatic color TV broadcast equipment. And supporting the FM modulator TV programs can be self-forwarding, satellite TV and microwave trunk TV programs. With high sensitivity, AGC wide control range, automatic power switch stable, reliable, large power output characteristics. Compared with the domestic products, 841 type machine adopts the FC-11 pipe gate push-pull amplifier circuit in high-frequency power amplification part of the unique, its design is novel and practical. This article briefly describes it