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实用新型
CN207283528U 单向RS-485信号传输大驱动力的逻辑电路 有权

单向RS-485信号传输大驱动力的逻辑电路
摘要：
本实用新型提供一种单向RS-485信号传输大驱动力的逻辑电路，其包含：驱动器、辅助电阻器件、辅助防护器件；驱动器具有信号输入端、第一信号输出端以及第二信号输出端，辅助电阻器件包括输入信号上拉电阻、第一功率电阻以及第二功率电阻，辅助防护器件包括第一抑制二极管、第二抑制二极管以及第三抑制二极管，第一抑制二极管、第二抑制二极管以及第三抑制二极管连接于信号输出端上。本实用新型的单向RS-485信号传输大驱动力的逻辑电路结构简单，除核心部件FAN3229外，只有6个必须的辅助器件。此外，本实用新型的单向RS-485信号传输大驱动力的逻辑电路具备不低于1.6A的电流驱动能力，可以对接不低于1000个RS-485负载终端。
摘要（英）：

The utility model provides an one -way RS the logic circuit of the big drive of 485 signal transmission power, it contains: driver, auxiliary resistor device, supplementary protective component, thedriver has signal input part, the first signal output and the 2nd signal output part, and the auxiliary resistor device includes incoming signal pull -up resistance, first power resistor and second power resistor, and supplementary protective component includes first suppression diode, second suppression diode and third suppression diode, and first suppression diode, second suppression diode and third suppression diode are connected on signal output part. The utility model discloses an one -way RS the logic circuit simple structure of the big drive of 485 signal transmission power except thatcore component FAN3229, has only 6 necessary supplementary devices. Furthermore, the utility model discloses an one -way RS the logic circuit of the big drive of 485 signal transmission power possesses the current drivability who is not less than 1.6A, can dock not to be less than 1000 RS 485 the load terminal.

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