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检修电视机故障最基本的工具是万用表,但有些故障仅凭万用表是无法检修的,而需借助一些价格比较昂贵的仪器,比如电视信号发生器、示波器和扫频仪等。购置这些仪器,对大多数初学维修的人和电子爱好者来说,可能是望尘莫及的事情。本文介绍一种适用于电视故障检修的多用信号源,这种信号源可以自己动手制作,价格也不会很高,而且在不少方面可以起到代替电视信号发生器、示波器和扫频仪的作用。
Maintenance of TV failure is the most basic tool for multimeter, but some failures can not be overhaul only by the multimeter, but with some of the more expensive instruments, such as TV signal generator, oscilloscope and sweeper. The purchase of these instruments may be beyond the reach of most beginners and electronics enthusiasts. This article describes a multi-purpose signal source for TV troubleshooting that can be made by yourself, at a fraction of the cost, and in many ways can be used as a replacement for TV signal generators, oscilloscopes, and scanners effect.