Isn't air conditioning a heat transfer? According to the energy efficiency ratio of 3, 1kW of electric power can obtain 3kW of heat from the surrounding environment. This 3kW of heat is then transferr...
There are two methods for sorting LEDs: one is chip-based test sorting, and the other is test sorting of packaged LEDs. (1) Chip test sorting LED chip sorting is very difficult, mainly because the siz...
The encoder signal has orthogonal AB phase pulse output and sine and cosine output. Both signals can distinguish direction and speed.
The two-phase stepper motor also injects orthogonal pulse signals ...
Seeing FU-33, RCA 833 tubes, reminds me of what it would sound like if I made a 4000W power amplifier. Would it sound like an airplane or a cannon on the battlefield? Solution: 4 833 tubes, anode volt...
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
introduction
MEMS is a high-tech that has flourished on the basis of integrated circuit production technology and dedicated micro-electromechanical processing methods. Pressure sensors develop...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
This article discusses the six design steps of LED lighting system design in detail: (1) determine the lighting requirements; (2) determine the design goals and estimate the optics; (3) the efficie...[Details]
The power consumption of a switching power supply includes fixed losses caused by parasitic resistances such as semiconductor switches, magnetic components, and wiring, as well as switching losses ...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
Applying fieldbus technology on new beer production lines is the first choice for large beer companies with strong management level and technical strength. Guangzhou Zhujiang Beer Group Co., Ltd. i...[Details]
Since the implementation of the self-weight toll collection system, the highway administration has not only high requirements for the vehicle axle recognition rate, but also requires a long service li...[Details]
The Portland Group, a leading provider of graphics processing units (GPUs) and graphics accelerators, has announced the availability of its PGI Accelerator™ Fortran and C compilers that support the...[Details]
High-frequency electrodeless lamp is a high-tech product that integrates electronic technology, vacuum science, power electricity, plasma science, magnetic material science and other disciplines. Elec...[Details]
The so-called constant current source is a power supply with a very stable output current, but this stability is relative, not absolutely unchanging, but its rate of change is so small that it can be ...[Details]
Power over Ethernet
(POE) Overview
POE (Power Over Ethernet) refers to the technology that can provide DC power to some IP-based terminals (such as IP phones, wireless LAN access points ...[Details]
The progress and development of computer technology and modern communication technology have made Zigbee technology mature. This system has established a mesh network based on the Zigbee2007/PRO proto...[Details]
Sensors of all types have evolved greatly over the past few years and are much more accurate and stable than their predecessors. Sometimes, these sensors are not easy to use.
Designers of cond...[Details]
On March 27, Sharp announced the news of capital business cooperation with Taiwan's Hon Hai Precision Industry, the world's largest EMS (electronics product manufacturing service) company. This decisi...[Details]
Power technology
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