CNY17-3S1(TB)

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Optoisolators, or optocouplers, are devices utilized in electrical circuits that aim to electrically isolate electrical signals between two points. One of them is CNY17-3S1(TB) optocoupler, which is a transistor photovoltaic output optocoupler. This article will describe in detail the application field and working principle of CNY17-3S1(TB) optocoupler.

Application Field:

CNY17-3S1(TB) optocoupler is mainly used in low-power electronic circuits that require electrical isolation of either AC or DC signals. It is a three-terminal optocoupler that utilizes a light-emitting diode (LED) to provide electrical isolation between an input signal and an output signal. This optocoupler has a wide range of applications, such as temperature and pressure sensors, safety systems, failure detection circuits in computer peripherals, motion controllers, and stepper motor position controllers.

Working Principle:

The CNY17-3S1(TB) optocoupler contains a photovoltaic diode that operates in concert with a bipolar transistor (BJT). It has a microscopic LED, which directs light toward the photovoltaic diode. The light impacts the diode, resulting in a voltage being created and current being conducted through the BJT. This current activates the BJT, which is in turn connected to an external source. This results in an electrical signal being generated through the optocoupler between the input and output.

The LED requires a current to operate, so the input of the optocoupler must be able to supply this current. The LED emits light, which is directed by a lens toward the photovoltaic diode, creating a voltage between the LEDs. This voltage is sent to the BJT, activating it and allowing current to flow through the transistor. The current is then sent to the external source, resulting in an amplified electrical signal being produced at the output.

CNY17-3S1(TB) optocoupler has its input and output connections isolated from each other for isolation protection. When the input is driven by an external source, the output is activated. It also has a high insulation resistance, which provides for higher safety and less risk of malfunctions occurring due to capacitive crosstalk. This allows for better DC performance in the circuit.

To summarize, CNY17-3S1(TB) optocoupler is a 3-terminal optoisolator that utilizes a light-emitting diode (LED) in order to provide electrical isolation between an input and output signal. The LED directs light to the photovoltaic diode, which then creates a voltage and drives a current through the BJT. This results in an amplified signal being produced at the output. This optocoupler is suitable for low-power electronic applications that require electrical isolation of either AC or DC signals.

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