EL817(M)-V

The EL817(M)-V optoisolator, or phototransistor, is a device that provides electrical isolation between two circuits. This type of optoisolator is primarily used to transfer voltage signals through a gap between the two circuits. The EL817(M)-V is suitable for digital and analog input and output applications, and has an operating temperature range of -55°C to +100°C.

The EL817(M)-V consists of a two-terminal phototransistor situated in a TO-5 type hermetic plastic package. Its construction and operation are similar to those of a normal phototransistor. When exposed to light, the EL817(M)-V will provide a voltage on the collector, which can then be used to drive other loads. The output of the device can be adjusted with a few steps either by changing the collector resistor or the light intensity.

The working principle of the EL817(M)-V is based on the photoelectric effect. Reverse biased light sensitive phototransistor causes an electron flow between its collector and emitter. The incoming light is converted to electrical signal emitted by the phototransistor. The gain and sensitivity of the EL817(M)-V are determined by the choice of the collector resistor.

The application fields of the EL817(M)-V optoisolator include lighting control systems, telecom applications, alarm systems, automotive and industrial applications, and alternative energy systems. Since they provide electrical isolation between the two circuits, optoisolators are often used in hazardous conditions where high voltage signals cannot be exposed directly.

The EL817(M)-V optoisolator is designed for various applications where the optical isolation of the two terminals is of prime importance. Because it has low drift and low power consumption, the EL817(M)-V is an ideal choice for transferring voltage signals between the circuits. It has a wide temperature range and maintains its performance over a long period of time, making it a reliable choice for a number of applications.