RS Components 电工电料 光耦 TLP291-4(GB-TP,E(T 使用说明.pdf,TLP291-4 Photocouplers Infrared LED Photo Transistor TLP291-4 TLP291-4 TLP291-4 TLP291-4 1. Applications 1. Applications 1. 1. ApplicationsApplications • Programmable Logic Controllers (PLCs)