Nonlinear and linear application of photoelectric coupler 4N25;

The linear application of photoelectric coupler in medical instruments;

Two photoelectric couplers with the same characteristic and one integration operational amplifer are used to make up circuits of feedback and output,realize the uncoen-ground transmission of analog signals in multi-power supply system,and work out the solution of common-mode interference in the course of signal transmission.

In this paper, the photoelectric coupler s apply in the system with band transmissio experiment has been presented.

Effect of space radiation to the optocoupler performance;

Study of organic optocouplers;

Structural design and package characteristics of optocoupler;

Owing to the volt-ampere characteristic of light-emitting diode and phototransistor in the photocoupler, there is a nonlinear distortion in its isolated transmission process.

On the basis of introducing photocoupler,the paper focused its description on a kind of pulse drawworks sensor,which was designed under the photo coupling technology, made a exposition to processing circuits of sensor pulse signals and lab detecting technology of sensor technical indexes and probed into methods of real time measuring well depths while drilling.

Main factors affecting the breakdown properties of insutalors are analysed, on the basis of which a high voltage isolating photocoupler is designed and fabricated.

Aiming at test requirements of isolation and dynamical performance in applications of optoelectronic coupler,a fast tester for digital optoelectronic coupler was developed using ADuc841 microcontroller.

Characteristics of optoelectronic coupler include small cubage,longevity,non-contact,anti-interference,isolability,and unidirectional signal transmission.

major failure modes and their failure mechanisms for domestic optoelectronic coupler were investigated by failure analysis of more than 20 failed samples of 6 types of coupler