4N31 Isolators

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optoisolators are a type of electronic devices that transfer electrical signals from one circuit to another without allowing penetration of electrical energy or current flow from one side to the other. This is commonly done by isolating the two circuits with an optical element, such as a light emitting diode or an LED. The 4N31 is a type of optoisolator specifically designed to include a photocoupler and transistor output.

The 4N31 optoisolator is a Transistor-Photovoltaic Output (TPO) optoisolator with a GaAlAs LED, a photo transistor, and an integrated resistor. It is designed to provide 10 Meg ohms of isolation, and a 3.8 kHz frequency rate. It is also capable of switching up to 0.2A at 200V, and accepting a maximum of 30mA of input current. When the LED and the photo transistor are connected, they form a complete, semiconductor switch.

The working principle behind the 4N31 optoisolator is the same as other optoisolators; when the LED is energized, it emits light, which is then detected by the photo transistor. The transistor then amplifies the light signal and passes it to the other side of the optoisolator, isolating the two circuits from each other. This ensures no electrical energy is transferred from one side to the other. The benefits of optoisolators are that they prevent unwanted interference, noise, and ground loop issues, which can be a problem in sensitive electrical systems.

The 4N31 optoisolator has a wide range of potential applications. It can be used in industries such as medical, automotive, printing, and industrial automation to provide isolators that allow signals to be safely transferred between different circuits. It can also be used in telecom, switching, and digital data communications systems as a means of isolating signals for stability and reliability.

In addition, the 4N31 is used in many consumer electronics, such as in musical instrument equipment and audio equipment, as well as in telephones, digital watches, computer keyboards, and remote control circuits. It can also be used for various audio purposes, such as noise suppression and echo cancellation.

The 4N31 optoisolator is a versatile and reliable device that provides an effective way of isolating signals from one another. It offers a wide range of potential applications, from medical and automotive to consumer electronics, and its robust design provides reliable, noise-free performance for many years. With its ability to switch up to 0.2A at 200V and accept up to 30mA of input current, the 4N31 is a highly capable optoisolator that is sure to meet the needs of any industry or application.

The specific data is subject to PDF, and the above content is for reference