4N24

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 - Transistor, Photovoltaic Output

An optoisolator, also called an optocoupler, is an electrical device that isolates two separate electrical circuits with an optical interface. They are commonly used in digital and analog signal processing to prevent interference from passing between circuits. The optoisolator consists of an infrared diode LED surrounded by a photoresistor. When a current is applied to the LED, it emits light which is absorbed by the photoresistor. The current passing through the photoresistor creates an electrical connection between the two circuits, thereby isolating them.

The 4N24 optoisolator belongs to the family of transistor, photovoltaic output optoisolators and is a type of optoelectronic device. It is used for power isolation and signal level shifting between digital system circuits. It is composed of an LED, a phototransistor and a resistor. The 4N24 has a fast switching speed, a wide operating temperature range and is suitable for applications up to 5mA of load current.

The 4N24 optoisolator functions by using a light-generated current that is created when a current passes through the LED. This current is picked up by the phototransistor when the LED emits the light, thus triggering the switch. The current then passes through the resistor, which provides a voltage drop, and across the output of the 4N24. This allows the two circuits to be electronically isolated while still allowing for data to be transferred from one circuit to the other.

The 4N24 optoisolator is designed for a variety of applications such as computer telecommunication, medical instrumentation, optical motion detectors, security systems, power, motor control, automotive and lighting control systems. It is also used as a signal level shifter, allowing for data transmission between different voltage levels. This provides an isolated signal path between two circuits, preventing external noise from entering the system.

Given its naturally isolated design, the 4N24 optoisolator is a great choice for applications where isolation or level shifting is required. It eliminates the need for additional components, which helps maintain a low cost and size. Its ability to switch fast and provide a wide operating temperature range makes it suitable for a variety of applications.

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