H11D23SD

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Optoisolators are electronic devices which are used to isolate electrical signals, preventing interference between connected circuits. The H11D23SD is a type of optoisolator characterized by a transistor, photovoltaic output. This device has a wide range of applications in digital and analog circuits.

Introduction to the H11D23SD

The H11D23SD Transistor-Photovoltaic Output Optoisolator is an opto-coupler with a photovoltaic output in a hermetically sealed 6-pin dual in-line package. It offers a wide range of features including a maximum operating voltage of 135V, a maximum operating temperature of 85°C, and an isolation voltage rating up to 3000Vrms. It is designed to provide electrical isolation between input and output circuits while allowing maximum transmission of electrical signals.

H11D23SD Application Field

The main application areas of the H11D23SD optoisolator are digital and analog circuits. It can be used in a broad range of industrial equipment and consumer electronics applications, such as:

• Automotive systems
• Programmable (PLC) controllers
• Industrial machine controls
• Building automation systems
• Robotics and automation
• Process controllers
• Medical instrumentation
• Printed circuit boards (PCB) for consumer appliances
• Consumer audio/video systems

H11D23SD Working Principle

The optoisolator works by transferring a signal between two physically-separated circuits by means of light. The input side of the H11D23SD contains an LED light source to generate the light, while the output side contains a photo transistor receiver to sense the light. When a signal is applied to the LED on the input side, it emits light which is received by the photo transistor receiver on the output side. The photo transistor receiver converts the light into a current, which is then sent to the output signal.

The opto-isolator provides excellent isolation, meaning it prevents any electrical interference between the two isolated circuits. The design also filters any ambient light which may be present, allowing only the desired light source to activate the output. In addition, the optoisolator provides increased common-mode noise rejection, reducing the chance of electrical noise from interfering with the signal.

Conclusion

The H11D23SD Transistor-Photovoltaic Output Optoisolator is a versatile, isolated device with a wide range of applications. Its combination of LED and photo transistor elements allows it to effectively transfer signals between two isolated circuits while filtering ambient light and rejecting common-mode noise, allowing for positive signal transmission.

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