This paper studies the power supply circuit of DX 10 kW medium wave transmitter modulation coding board.The modulation coding board is the core of the medium-wave transmitter audio system,and the stability of the power supply circuit directly affects the audio quality of the transmitter and the stability of the whole machine.This paper explores the control principle of the modulation on the output module,and analyzes the logic theory of cable interlocking circuit.On this basis,the key points of the power circuit operation and maintenance of the modulation coding board are summarized,including the inspection of the output voltage of B+stable power supply and the modulation B-power drive signal and the interlocking maintenance of power amplifier cable,which can provide reference for related work.
关键词
中波发射机/调制编码板/电源电路
Key words
medium wave transmitter/modulation coding board/power supply circuit
维普
万方数据