APV2121S

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Optoisolators are a type of isolation device that ensure electrical and optical coupling to protect circuitry from undesired signals, power surges, and transients. A reliable and versatile optoisolator, APV2121S is specifically designed for applications where a long electrical isolation is required. This device is a Transistor-Photovoltaic Output optoisolator, which converts an electrical input signal into a light output signal and isolates the input from the output circuit, while providing electrical insulation.

APV2121S Transistor-Photovoltaic Output optoisolator is an integrated circuit that combines a photovoltaic dark detector, an output transistor, and the necessary connections. Its working principle is based on a semiconductor photocell, often referred to as a phototransistor, which is optically coupled to a light emitting diode (LED). When the LED is energized, photons of light will be emitted and absorbed by the phototransistor, which will cause it to turn on and activate the circuit.

The circuit diagram of the APV2121S optoisolator is as follows: It consists of a photodiode and a phototransistor. When the LED is energized, the light will be emitted, striking the photodiode and generating a photovoltaic current. This current will be conducted through the phototransistor, causing it to turn on and activate the circuit. The phototransistor then provides an output signal that can be used to control the operation of a variety of circuit components.

APV2121S optoisolator is mainly used for signal transmission, medical equipment, industrial instrumentation, data acquisition, and electrical energy metering. In signal transmission applications, the optoisolator is used to prevent interference from an external signal source. In medical equipment, it can be used to monitor vital signs or body temperature. In industrial instrumentation, the optoisolator is used to precisely monitor and control specific components. In data acquisition, it can be used to isolate signals for high-speed transmission, providing electrical insulation between two circuits.

APV2121S Transistor-Photovoltaic Output optoisolator is a highly reliable and versatile isolation device that provides superior electrical insulation for a variety of applications. Its unique design ensures a long electrical isolation between the input and output circuit, while providing a high level of accuracy and protection for the circuitry. With its superior reliability and versatility, the APV2121S optoisolator is the perfect choice for a variety of applications, where a reliable and long electrical isolation is required.

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