PS9117-F3-A

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Optoisolators - Logic Output is an important category in the application field of components and electronic equipment. The PS9117-F3-A is a type of optoisolator with logic output. It is mainly used in various applications that require electrical isolation or signal transmission, as well as the reversing of logic levels. Let\'s take a closer look at its application field and working principle.

Application field

The PS9117-F3-A optoisolator with logic output is mainly used in output circuits and switching circuits to protect sensitive input circuits from transients, surges, and other overvoltage. It is a common isolation device for ac-dc, dc-dc, and even high voltage isolation. It can also be used to convert logic levels from TTL to CMOS, and vice versa. Furthermore, it is used in notebook computers, computers, and other electronic equipment that require a high degree of isolation. In addition, it can also be used for battery circuit protection for computers, and in PLC circuits.

Working Principle

The working principle of PS9117-F3-A optoisolator with logic output is based on an LED and a phototransistor internally connected together. The LED is used as an emitting device, and it emits light when a current passes through. The phototransistor acts as a receiving device and will generate electrical signals when it is exposed to light. Together, the LED and phototransistor form an optocoupler, providing electrical insulation between input and output circuits. The output circuit will detect the light emitted by the LED and generate a logic output signal.

The LED of the PS9117-F3-A is driven by a voltage source which is connected to the OPEN-COLLECTOR driver stage. The voltage source generates a current which passes through the LED and generates light. The phototransistor then detects the light and turns on a stage driver circuit. This allows the output driver to generate a logic output signal which can then be read by the input circuit. The logic output signal has both a high and low state which correspond to the logic level of the input circuit.

Thus, the PS9117-F3-A optoisolator with logic output is a device which is used for electrical isolation, reversing of logic levels, and signal transmission between input and output circuits. It is an important device for protecting circuits from transients, surges, and other overvoltages. It also allows for the conversion of logic levels between TTL and CMOS logic signals.

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