EL817(S)(TD)-VG

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Optoisolators are electronic components that can be used to isolate circuitry and signals, protecting a system from disturbances as well as electromagnetic and radio frequency (EM/RF) interference. The EL817(S)(TD)-VG is a transistor photovoltaic output optoisolator used in a variety of applications. In this article, we will discuss the fields of application for the EL817(S)(TD)-VG and its working principle.

Application

The EL817(S)(TD)-VG is primarily used in industrial and consumer electronics applications, where optoisolation is necessary to protect the system from potential damage or interference from outside sources. These applications include motor control, industrial process control, automotive electronics, lighting, and power conversion systems.

The EL817(S)(TD)-VG is also used in medical applications where it can be used to provide optical isolation between a medical instrument and an external signal or power source. This can be used to isolate electrical signals in medical equipment or sensors for patient monitoring, as well as isolated power sources used to eliminate unnecessary noise and interference from outside sources.

Working Principle

The EL817(S)(TD)-VG optoisolator is composed of three main components: an LED, a phototransistor, and a Zener diode. When a voltage is applied to the LED, it emits light which causes the phototransistor to become activated, thus allowing current to flow through it. The Zener diode acts as a voltage regulator, limiting the voltage to a predefined level.

Once activated, this setup creates a separ

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