4N38(SHORT,F)

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Optoisolators, also known as optocouplers, are electronic components used to isolate electric signals between two circuits. They are often used to isolate sensitive devices from sources of high electrical noise, such as a motor or an amplifier. The 4N38 (SHORT,F) is a type of optoisolator with a transistor and photovoltaic output. This component is available in a variety of packages, including a hermetic package and a standard lead frame package. It is rated for working voltages up to 30V.

The 4N38 optoisolator consists of an LED, a phototransistor, and a reverse-biased diode. The LED emits light that is detected by the phototransistor, which acts as a switch. When light is detected by the phototransistor, it turns on and forwards current to the output. The reverse-biased diode prevents circuit current from taking a reverse path. The current is then limited to a safe value by the resistor.

The 4N38 optoisolator is typically used to isolate and protect sensitive devices, such as controllers and displays, from high voltage and current, as well as from electrical noise. The 4N38 is also used in industrial automation, such as temperature control, speed control, and signal conditioning.

The 4N38 optoisolator is available in two package types, the hermetic package, and the standard lead frame package. The hermetic package is sealed in a metal lid, providing more stability and protection than the standard lead frame package. The standard lead frame package is a cost effective solution for applications that do not require hermeticity.

The 4N38 optoisolator is useful for providing isolation and protection between two circuits in a wide variety of applications. It is used to protect sensitive devices from high voltages, current, and electrical noise, as well as in industrial automation. By providing isolation and protection between two circuits, the 4N38 optoisolator helps ensure the safety and operation of the connected devices.

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