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713雷达接收机内的参量放大器，其所用的泵源电压一般在＋5V～＋8V之间。但由于泵源电压的稳压电路一旦出现故障，就会使泵源电压突升至20V以上，这样就会击穿参量放大器的变容管，造成参量放大器损坏，降低接收灵敏度，影响雷达对弱回波、尤其是热带气旋的探测能力。本站曾因
713 radar receiver parametric amplifier, the pump voltage used in the general +5 V ~ +8 V between. However, the pump voltage regulator circuit in the event of failure, it will make the pump voltage suddenly risen to 20V above, it will breakdown parametric amplifier varactor, causing parametric amplifier damage, reduce the receiving sensitivity, affecting the radar weak Echoes, especially tropical cyclone detection. This site has been due