PS2705-1-F3-A

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• Introduction
• Application Field
• Working Principle

Introduction

Transistor Output Optoisolators, also known as photocouplers, consist of a light source, typically a LED, that is optically coupled to a phototransistor or phototube. They use an LED to send an electrical signal in the form of light across a short gap and a sensor to detect the light. Such devices are useful when isolation of the input signal from the output signal is desirable.

PS2705-1-F3-A is one type of Transistor Output Optoisolators that meets very stringent safety and reliability requirements. It features a wide range of operating temperature, high isolation (basic insulation) voltages, and high degree of CMR. It is widely used in test and measurement, medical, and automotive applications.

Application Field

The PS2705-1-F3-A is a reliable, economical choice for communication and signal isolation between circuits of different potential. It can be used in a variety of applications such as protection and signal transmission between circuits for data communication, office automation, audio/video, home appliances, and automobiles.

In medical equipment applications, for example, it provides electrical isolation between patient/operator and operating circuits and effectively protects medical personnel from electrical shocks and helps reduce the risk of electrical fire in the medical facility. In test and measurement applications, this device is used to transfer digital signals from a computer port to a test instrument.

Working Principle

The PS2705-1-F3-A is composed of an LED on one side and a phototransistor or phototube on the other. When a positive voltage is applied to the LED, it emits light that is then detected by the phototransistor or phototube. This light activates the phototransistor or phototube, which in turn amplifies the signal and provides the output current.

The optoisolator provides electrical isolation between the input and output circuitry for protection. For example, when used in a medical application to protect personnel from electrical shocks, the optoisolator isolates patient/operator and operating circuits. This device also eliminates ground loop problems that may arise from connecting multiple circuits.

The PS2705-1-F3-A has a high degree of CMR, which ensures that the output voltage remains isolated from the input voltage, providing a reliable and stable output signal even in noisy conditions. It also has a wide range of operating temperature, which allows it to work over longer periods of time.

The PS2705-1-F3-A is RoHS-compliant and has a long life and high reliability, making it an ideal choice for a wide range of applications.

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