Principle of stepping motor controlled by single chip microcomputer This document introduces the working principle of Deng stepper motor and the characteristics of stepper motor controlled by single-chip microcomputer in detail. The stepper motor is a digitally controlled motor
Title: Huaqiao Middle School Campus Radio, Longhua Vocational Secondary School LED Display Supplementary Tender No.: RWZFCG-2009-25 (2009 闽财è´è®¡ [0009] No. Announcement Date: March 30, 2009 Deadline: 2009 March 13th Tendering Agency: Fuqing Huaqiao Middle School, Fuqing Longhua V
The so-called lumens simply refers to the brightness of a candle-lit light outside one meter. An ordinary 40-watt incandescent light bulb has a luminous efficiency of about 10 lumens per watt, so it can emit 400 lumens of light. The 40 watt incandescent lamp has a luminous flux of 340
Europe turns to energy efficient lighting, says Osram Date Announced: 18 Aug 2009 -- The incandescent lamp is a thing of the past European consumers are switching to green products as a result of the EU ban on incandescent lamps. According to the GfK market research company, sales of traditional
Circuit diagram of car battery monitor Dove PrismDove prism is a kind of reflection prism with inverted image, which is used for rotational imaging in various optical mechanical systems. It is mainly used in measuring instruments and optical equipment. Ott op
Title: LED Light Source Color Test System and other equipment procurement projects Tender Notice Tender No.: HBQD-0903SJ-001-TP Announcement Date: March 26, 2009 Deadline: April 8, 2009 Tendering Agency: Shandong Inspection and Quarantine Bureaus and cities: Shandong Province-Qingdao City Content:
Class 0 luminaires are luminaires that rely on basic insulation as protection against electric shock. This means that the accessible conductive parts of the luminaire (if such parts) are not connected to the protective conductors in the fixed line of the facility, and once the basic insulation fail
Due to integration requirements, hybrid vehicles are the most complex systems for design, manufacture, and maintenance. Robust design methods provide the architecture for designing reliable hybrid vehicle systems. Electric vehicles were developed in the past to address higher fuel costs and incr
Hand shake is ubiquitous. As long as it is a handheld camera, there are more or less jitter problems. The difference is that everyone's stability is different. This involves the concept of a safe shutter. In simple terms, a safety shutter is the reciprocal of the focal length, that is, the sh
OBS network topology and network management The topology and network management of the OBS network are shown in Figure 1. The network includes OBS core switching node equipment and OBS edge node equipment. Edge nodes are connected to the core node using DWDM links. OBS netwo
On March 20th, at the theme report meeting of the 17th China International Radio and Television Information Network Exhibition (CCBN2009), Zhang Haitao, deputy director of the State Administration of Radio, Film and Television, said that the country uses direct broadcast satel
Nine members of the US Congress wrote to the US Environmental Protection Agency (EPA) Administrator Lisa Jackson a letter urging EPA to stop its "continuous conflict" with the US Department of Energy (DOE) - about the energy of residential solid-state lighting products Star standard. The