PC817X1NIP1B this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PC817X1NIP1B price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for PC817X1NIP1B to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.
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Principal Functions of the PC817X1NIP1B
- Isolation Capability: Its primary role is to offer electrical isolation, vital for safeguarding electronics against voltage spikes.
- Optical Linking Method: It achieves signal transmission through an LED and a phototransistor, ensuring no direct electrical contact.
- Characteristic Specs: The PC817X1NIP1B generally operates in a voltage range of 5V to 35V, with the internal LED's forward current typically around 50mA.
Typical Applications
- Securing Control Circuits: Often used in power supply units to isolate the control circuits from high voltages.
- Microcontroller Interfaces: Suitable for connecting microcontrollers with high-voltage or noisy electronic environments while maintaining safety.
Circuit Design: Interfacing a Microcontroller with a Relay
Here is a comprehensive application of the PC817X1NIP1B in a microcontroller-relay interface circuit:
1. Circuit Objective
- Goal: To enable a microcontroller to control a relay, which can switch higher voltage loads, while ensuring electrical isolation.
2. Input Connection Strategy
- From Microcontroller to Optocoupler: Connect a microcontroller's GPIO pin to the anode of the PC817X1NIP1B's internal LED, using a current-limiting resistor in series. Attach the cathode to the ground.
3. Output Configuration
- From Optocoupler to Relay: The phototransistor part of the PC817X1NIP1B is used to drive the relay. Connect the collector to the relay's control input, and the emitter to the common ground.
4. Key Design Aspects
- Resistor Selection: Essential for regulating the LED's current, calculated based on the microcontroller's output voltage and the LED's forward voltage and current.
- Relay Compatibility: Ensure the relay's control circuit is compatible with the output from the phototransistor.
- Optocoupler's Specifications: The PC817X1NIP1B's isolation voltage and current ratings should match the requirements of the relay circuit.
In this scenario, the PC817X1NIP1B serves as a critical intermediary, enabling a low-voltage microcontroller to safely control a high-voltage relay. This highlights the optocoupler's role in modern electronics, especially in applications where electrical isolation is imperative. When designing circuits with this optocoupler, attention to the electrical characteristics of both the microcontroller and the relay, as well as the optocoupler's ratings, is key to ensuring effective and safe operation.
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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of PC817X1NIP1B.
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