一种检测调校光电控制器的可变照明装置包括：在箱体光室中一端的光度可调的白炽灯泡。在光室中靠近灯泡的、使灯泡发出的光多次反射的光障。在光室中另一端的让该多次反射后的光线射出光学室的透明窗口。在光室中窗口附近的具有窗口相同光度的测光表。在光室外的围绕该窗口的遮光圈。与测光表连接的在箱体电器室中可由外部读数的显示器。在电器室中向灯泡供电的电池组。在电器室中可由外部调节的控制该电池组供电电流大小的变流器。在电器室中的可由外部调节测光表的调节器。本实用新型装置结构简单，造价低廉，体积小巧，可用于不同尺寸的光电控制器感光窗，使得街灯用的光电控制器在任何强度的环境光下都能检测调校。
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The invention provides a fluid buffer with adjustable damping coefficient, it includes: cylinder tank which has a placing space, the placing space is filled with fluid; piston which is equipped with piston head moving in the placing space and the piston bar extending from the piston head to two ends.....
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The present invention provides a simple and effective compensation for voltage transients of the reference signal generator, which consists of the relay, and the Butterworth filter, linking together, the input signal passes through the reference signal generator to generate a total low harmonic dist.....
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An ultrasonic transducer driver has a giant magnetostrictive element, a fastener for holding the giant magnetostrictive element under mechanical pressure, a first field generator for providing a magnetic bias field, a second field generator for providing a magnetic drive field and a magnetic circuit.....
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The present invention relates to a pyridine carboxylic acid as a ligand for Oxo acid, acetic anhydride positive ions bimetallic catalysts. The catalyst is pyridine carboxylic acid ion activity center with Rh (I) the formation of chelate-type square planar cis-dicarbonyl ligand structure, pyridine ca.....
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