EL817(D)-V

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Optoisolators, also known as optocouplers, are electronic devices used to isolate two circuits electrically. They can help reduce the interference of electromagnetic interference (EMI) between the two circuits and provide reliable isolation from high: voltage spikes and ground loops. The EL817(D)-V is a transistor photovoltaic output optoisolator that is used in applications requiring high isolation performance, such as DC/DC converters, inverters, motor control and power supplies. In this article, we will discuss the application field and working principle of the EL817(D)-V.

The EL817(D)-V optoisolator provides a maximum isolation voltage up to 5 kV RMS, which makes it suitable for high voltage applications that require high insulation performance. It can withstand voltage transients of up to 40 kV with no damage to its photovoltaic devices. The EL817(D)-V has a narrow optical bandwidth of 700 nm to 950 nm, making it suitable for applications that must maintain narrow bandwidths. In addition, the EL817(D)-V has low power consumption and low propagation delay, making it suitable for high-speed applications.

The EL817(D)-V optoisolator includes a gallium arsenide infrared LED and a photodiode connected in inverse parallel configuration. The LED emits infrared light when a voltage is applied to it, which is absorbed by the photodiode and converted into an electrical current. This electrical current is then applied to the base of a transistor, causing the transistor to switch on and provide an output voltage. By controlling the base current, the on-off switching rate of the transistor can be controlled. The EL817(D)-V also includes internal protection circuits that protect the LED from reverse voltages and over-voltage.

The EL817(D)-V optoisolator is primarily used in DC/DC converters, inverters, motor control systems, and power supplies. It can be used in a variety of applications, from medical equipment to industrial machinery and automotive systems. It is useful for applications that require high isolation performance and fast switching rates. It can also be used in applications where the LED and photodiode must maintain narrow optical bandwidths.

The EL817(D)-V optoisolator is an excellent choice for applications that require high isolation performances, fast switching rates, and narrow optical bandwidths. Its low power consumption and fast propagation delay make it suitable for a wide range of applications. Further, the optoisolator includes internal protection circuits that protect the LED from reverse voltages and over-voltage, ensuring its safety and reliable operation. By utilizing the EL817(D)-V, designers can ensure that their applications have the best isolation performance, fast switching rates, and reliable performance.

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