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Alibaba Cloud Infrastructure

Dec 17, 2021 · Cloud Computing

Alibaba Cloud’s Self‑Developed Green Data Center Technologies Featured in the 2021 National Telecom Energy‑Saving Product Directory

Alibaba Cloud’s 10 kV AC‑input DC UPS system and high‑elasticity cooling technology were officially listed in the Ministry of Industry and Information Technology’s 2021 National Telecom Energy‑Saving Product Catalog, highlighting significant efficiency gains and supporting China’s green data‑center initiatives.

Alibaba Cloudcloud computingcooling technology

0 likes · 5 min read

Alibaba Cloud’s Self‑Developed Green Data Center Technologies Featured in the 2021 National Telecom Energy‑Saving Product Directory

OPPO Kernel Craftsman

Jul 2, 2021 · Mobile Development

Understanding the Android Power Supply Subsystem and healthd Daemon

The article explains how Android’s Linux power‑supply subsystem abstracts battery and charger status via sysfs nodes, how drivers register properties and trigger uevents, and how the healthd daemon listens to those events, parses attributes, and forwards detailed power information to user space.

AndroidHealthdKernel

0 likes · 9 min read

Understanding the Android Power Supply Subsystem and healthd Daemon

Architects' Tech Alliance

Feb 8, 2021 · Fundamentals

Overview of UPS Technologies and Redundant Power System Architectures

This article explains the fundamentals of UPS systems, describing standby, line‑interactive, and double‑conversion topologies, their operational principles, economic mode based on ITIC curves, and various redundancy configurations such as parallel N+1, centralized and distributed bypass, and dual‑bus architectures for data‑center reliability.

Electrical EngineeringEnergy StorageUPS

0 likes · 10 min read

Overview of UPS Technologies and Redundant Power System Architectures