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sifudianjiyuanliyuyingyong.rar
Servomotors are available as AC or DC motors. Early servomotors were generally DC motors because the only type of control for large currents was through SCRs for many years. As transistors became capable of controlling larger currents and switching the ...
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JPEGimageCompressiontechniquesimplementationandopt
... 。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG ...
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dcdc.rar
dc dc converter with fuzzy for rectifie and inveter
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parallel.rar
parallel connected pFC controller ac to dc dc to dc converter
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steganography_in_jpeg.rar
data hasnt been embedded in dc coeffs,therefore results in a better histographic response.unlike methods like jsteg where quantized coeffs wid value 1 are not altered because they can be made equal to zero,here they can acquire a value of -1,instead.
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kaiguan.rar
使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器，输出电压可在30～36V可调，系统效率可以达到92 。整个变换器由C8051F020型 ... 压指示，完成了基本部分和发挥部分的所有要求。使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器，输出电压可在30～36V可调，系统效率可以达到92 。整个变换器由 ... 压指示，完成了基本部分和发挥部分的所有要求。使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器，输出电压可在30～36V可调，系统效率可以达到92 。整个变换器由 ...
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DP51PROA.rar
51相关外围扩展电路，包括IIC器件PCF8563,PCF8576,ZLG7290；液晶控制电路LCD1602和12864；步进电机控制电路；伺服电机控制电路 AD，DC控制；温度，湿度控制等等，有很好的参考价值。
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