【摘 要】
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我台从鞍山广播器材厂购置的GSCT-1-Ⅱ一千瓦单通道中频调制彩色电视发射机在运行过程中,除±12V电源等出现过几次故障外,通道部分工作一直正常。但在最近一段时间曾先后出
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我台从鞍山广播器材厂购置的GSCT-1-Ⅱ一千瓦单通道中频调制彩色电视发射机在运行过程中,除±12V电源等出现过几次故障外,通道部分工作一直正常。但在最近一段时间曾先后出现过两次末级输出功率不足,伴音小的故障,笔者用扫频仪检查末级幅频特性时发现如附图所示的特性曲线,从图中可看
The GSCT-1-Ⅱ one-kilowatt single-channel IF modulation color TV transmitter purchased by our company from Anshan Broadcasting Equipment Factory has been working normally for some time except for ± 12V power supply. But in the recent period has appeared twice in the last stage output power shortage, small sound fault, the author used the scanner to check the final amplitude-frequency characteristics found in the figure shown in the characteristic curve, can be seen from the figure
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