CNW85S

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Optoisolators enable electronic separation of a logic signal from a main circuit to enhance the overall system performance and safety in a variety of industrial and consumer electronic applications. Different optoisolator families and permutations exist depending on the input or output configuration and functionality. The CNW85S is a 5 mm phototransistor optoisolator in the transistor, photovoltaic output family, which provides a substantial amount of protection as well as superior performance in the form of high current transfer ratio, high isolation between input and output, and the capability to couple signal with minimum distortion.

The CNW85S is designed to be used in three-phase motor drive systems. It features an open-collector output circuit that enables simple, power-saving logic control. Additionally, it features an inbuilt EMC filter with reduced EMC noise sensitivity. It also has a wide operating temperature range, making it suitable for many industrial applications.

In terms of its working principle, the CNW85S utilizes light-to-electricity (photovoltaic) conversion, which is achieved through the use of a light-sensitive component such as a photodiode or LED. A light beam is first directed towards the LED and the diode then creates a photocurrent in the circuit, which is then used to actuate the output transistor. The output voltage of the optoisolator is then directly proportional to the photocurrent that was generated at the input. This voltage is then used to drive the output transistor.

Furthermore, the CNW85S features a wide isolation voltage range and can withstand up to 5 kV rms at 1 min. It also features a safety circuit to protect against electrical surges and overcurrent conditions. Another beneficial aspect of this optoisolator is its high voltage resistance and high current transfer ratio for accurate signal transmission.

In conclusion, the CNW85S is a suitable optoisolator for three-phase motor drive applications that feature an open-collector output circuit. This optoisolator helps to ensure a high level of performance and safety in the system by providing superior isolation, EMC protection, and superior current transfer ratio. Additionally, it has a wide operating temperature range and high voltage resistance. Thus, the CNW85S represents a reliable and practical optoisolator option for many industrial applications.

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