Cement resistance: is the resistance wire wound on the alkali heat-resistant porcelain, coupled with heat resistant, resistant to wet outside fixed protection and corrosion resistance of the materials and the winding resistance into the square porcelain box body, using special incombustible cement packing seal.The outside of cement resistance is mainly made of ceramic materials (generally divided into high alumina porcelain and feldspar porcelain).
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The Internet of Things (IoT) relies heavily on a vast network of sensors to collect and transmit data from various devices. This data is then processed and analyzed by the upper-level platform. However, the computing layer within such systems demands significant power, which has been highlighted by major IT companies. As IoT becomes more widespread, global power infrastructure may struggle to meet the rising energy demands. When AI is integrated with IoT, both cloud platforms and edge devices will require even more power, making power management a critical design consideration in AIoT systems.
Zhang Rencheng, an application engineer at Vicor, emphasized that the development of AIoT is largely focused on vertical industries, requiring tailored solutions for specific applications. For instance, Vicor’s products are currently targeted at aerospace, military, communications, servo computing, and industrial sectors. They also see great potential in the automotive market, where power management solutions must meet unique specifications—such as wide input voltage ranges, high output voltages, high efficiency, compact size, low weight, and minimal electromagnetic interference (EMI). These requirements differ significantly from those of consumer electronics, meaning only experienced manufacturers can deliver reliable performance.
As shown in the image, IoT power design presents unique challenges. Low noise and high integration are becoming key focus areas in modern AIoT systems. Zhang noted that IoT devices are deployed in various environments, often requiring miniaturization. Within these compact spaces, components must operate at peak performance without interfering with each other. Among all components, the power supply and RF circuits are most prone to such issues. To address this, power suppliers must offer low-noise and highly integrated solutions.
According to Zhang, leading U.S. power technology for IoT includes three main architectures: Zero Voltage Switching Regulators (ZVS), Dual-Clamp ZVS, and Sine Wave Amplitude Converters (SAC). The ZVS regulator is typically a non-isolated DC-DC converter, including Pre-regulator Modules (PRMs) and Cool-Power ZVS regulators. Dual-clamp ZVS is used for isolated DC-DC or AC-DC converters, while SACs include BCM, IBC, and VTM modules for isolated, fixed-ratio DC-DC conversion.
Traditionally, power supplies combined regulation and conversion in one design. However, for complex applications, this approach leads to power loss, as each voltage rail requires independent regulation. This makes cost reduction difficult. Vicor addresses this challenge with the Factorized Power architecture. The PRM handles pre-voltage regulation using a high-performance ZVS topology, while the VTM converts the regulated voltage to the required level for the CPU using sine wave amplitude conversion.
Zhang concluded that power supply design plays a crucial role in system performance and stability. He advised selecting experienced power suppliers to ensure efficient and reliable operation of AIoT systems.
September 26, 2025