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Anatomical Thermal Relay

The thermal relay consists of a heating element, a bimetal, a contact, and a set of transmission and adjustment mechanisms. The heating element is a resistance wire with a small resistance value, which is connected in series in the main circuit of the protected motor. The bimetal is formed by rolling two metal sheets of different thermal expansion coefficients.

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Nordic Introduces Next Generation nRF5 Series High-End Multi-Protocol System-on-Chip for IoT Applications

The nRF5340 integrates a high-performance application processor, a fully programmable ultra-low-power network processor, and advanced root of trust and trusted execution security into a low-power, multi-protocol SoC for professional lighting, industrial automation, Advanced wearables and other sophisticated IoT applications.

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Allegro Introduces Three-Phase BLDC Driver IC A89331

Allegro MicroSystems (hereinafter referred to as Allegro), a global leader in power and sensing solutions for motion control and energy efficient systems, announces the world’s first three-phase BLDC driver IC A89331 with integrated power loss brake (PLB) This code-free, sine wave sensorless fan driver is designed to increase energy efficiency, reduce energy consumption and data center costs. The new PLB feature also increases data center security and reduces bill of materials (BoM) costs.

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LM324 Operational Amplifier


This article will detail the LM324 amplifier. It is an operational amplifier (Op-amp) consisting of four channels. It is a low cost device with true differential inputs. For single-supply applications, the LM 324 is superior to other op amps. The LM-324 is capable of operating at voltages as low as 3V and high voltages up to 32V.

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NXP Semiconductors Introduces New Automotive UWB Chip Expanded by UWB Portfolio

NXP Semiconductors announces an expansion of its UWB portfolio – the introduction of a new automotive UWB chip. NXP’s UWB technology provides accurate, secure, real-time location capabilities that are unmatched by other wireless technologies such as Wi-Fi, Bluetooth and GPS.

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STMicroelectronics Releases Smart Meter Chipset with Integrated RF and PLC Connectivity

Hongkong, November 14, 2019 – STMicroelectronics (ST; NYSE: STM), the world’s leading semiconductor supplier across multiple electronic applications, is driving smarter urban and industrial infrastructure. Integrated power line and wireless communication technology in its market-proven smart meter chipset.

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Microchip Adaptec Smart Storage Adapter for Seamless Interoperability with Other Server Components

Microchip Smart Storage Adapter and AMI MegaRAC® SP-X management, seamless interoperability with firmware for large-scale secure storage management . Interoperability between Microchip and AMI simplifies the development of out-of-band remote storage management solutions and reduces data center operating costs.

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ULN2003 Relay Driver IC

Today, I will introduce you to ULN2003. It is basically a relay driver IC and a Darlington array with high voltage and high current. It consists of seven open collector Darlington pairs with common emitters, indicating that ULN2003 has the ability to process seven different relays at a time.

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How the Relay Works

A relay is an electronic control device that has a control system (also called an input loop) and a controlled system (also called an output loop). It is usually used in an automatic control circuit. It actually uses a small current to control the larger An “automatic switch” of current. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.

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