Single coaxial cable bidirectional drive circuit diagram
Source: InternetPublisher:闪电杰克 Keywords: Power supply other power circuits Updated: 2020/03/27
Generally, coaxial cable communication uses a dual-cable system, with one cable sending and one cable receiving. If a single cable transmission method is used, one cable can be saved, but this is only easier to implement for audio signals. For signals with a frequency of several MHz, it is difficult to use a high-speed amplifier and solve the impedance matching problem. very difficult. This circuit can provide bidirectional driving function for a single coaxial cable. According to the values marked on the components in the figure, it is suitable for 50 ohm systems. After slight improvements, it can be suitable for 75 ohm systems.
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