在使用晶体管耦合器的电路中,应如何选择负载电阻?

参阅东芝应用说明《Basic Characteristics and Application Circuit Design of Transistor Couplers》第2-3节“Transistor Coupler Circuit Design for Signal Transmission”。
https://toshiba.semicon-storage.com/cn/semiconductor/knowledge/application-note.html

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