1.LED- red-rated for transmission.
2. Use phototransistor to receive.
To realize infrared transmission and reception in multisim, you can also choose photoelectric coupler, which is an electrical-optical-electrical conversion device that can transmit electrical signals through light.
Extended data:
Infrared transmitting and receiving experiment in multisim;
It is a main function of EDA software to judge whether the design is correct and reasonable by analyzing the operation results of analog circuits. Therefore, Multisim provides users with various virtual instruments, which can be downloaded from the design toolbar &: reg; Instrument toolbar, or use the menu command (Simulation/ instrument) to select these 1 1 instruments. After selection, various virtual instruments are displayed in the circuit in the form of panels.
Precautions for photoelectric coupling:
1, because the photoelectric coupler is a unidirectional signal transmission device, and the data transmission in the circuit is bidirectional, the size of the circuit board is required to be certain, and combined with the actual requirements of circuit design, it is necessary to choose a monolithic integrated multi-channel photoelectric coupler device.
2. The allowable range of the current transfer ratio (CTR) of the optocoupler is not less than 500%. Because when CTR: 5.0 mA), in order to ensure that the signal does not appear errors in long-line transmission, this will increase the power consumption of the optical coupler.
3. The transmission speed of optical coupler is also one of the principles that must be followed when choosing optical coupler. The switching speed of optocoupler is too slow to respond to the input level correctly, which will affect the normal operation of the circuit. ?
Baidu encyclopedia -multisim
Baidu encyclopedia-photoelectric coupler