4N26S(TB)

Optoisolators are electronic devices that use a light-emitting diode (LED) and a photovoltaic detector to provide electrical isolation. The 4N26S (TB) is a type of optoisolator that is widely used in industrial and automotive applications for its high-speed response and noise resistant properties. The 4N26S (TB) optoisolator works by converting an electrical signal into a light signal to communicate with other circuits and devices, thus providing isolation between the two circuits. This article will discuss the application fields and working principle of the 4N26S (TB) optoisolator.

Application Fields

The 4N26S (TB) optoisolator is commonly used in industrial, automotive, and signal-transmission applications where a fast response and reliable operation is required. It is suitable for applications where there is the potential for electromagnetic or radio frequency (EMF/RF) interference between two circuits. The 4N26S (TB) optoisolator is also ideal for voltage and current sensing in battery powered devices, as it can provide up to 5kV of insulation between the input and output circuits.

The 4N26S (TB) optoisolator is also used in motor control circuits, where it can be used to measure the rotational speed of the motor or to detect current faults. It is also commonly used in frequency modulation (FM) receivers and infrared remote control systems. Its wide operating temperature range of -40 to +85°C makes it suitable for use in a variety of harsh environments.

Working Principle

The 4N26S (TB) optoisolator works by using a light-emitting diode (LED) and a photovoltaic cell to isolate two circuits. The LED emits a light signal when a current is applied to it, which is then detected by the photovoltaic cell and converted into an electrical signal. The electrical signal is then used to activate a switch, which in turn can control other circuits or devices. In this way, the 4N26S (TB) optoisolator provides electrical isolation between the two circuits, thereby reducing the risk of interference and electric shocks.

The 4N26S (TB) optoisolator has a fast response time of 10us, making it ideal for applications where high speed is required. It also features a wide operating temperature range of -40 to +85°C. Furthermore, its high insulation resistance of 5000V makes it suitable for high voltage applications.

The 4N26S (TB) optoisolator is a reliable and robust device that is widely used in a variety of industrial and automotive applications. Its high speed response and noise resistant properties make it an ideal choice for controlling motor or signal-transmission applications. It is also great for voltage and current sensing in battery powered devices, as it can provide up to 5kV of insulation between the input and output circuits. In addition, its wide operating temperature range and high insulation resistance make it a great choice for high voltage applications.