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    • 1. 发明授权
    • Apparatus for measuring water content
    • 水含量测定装置
    • US4764018A
    • 1988-08-16
    • US50478
    • 1987-05-18
    • Hiroki Inoue
    • Hiroki Inoue
    • G01N21/31G01N21/35G01N21/85G01J3/51
    • G01N21/314G01N2021/3174G01N2021/8592G01N21/3554G01N2201/0636G01N2201/1211G01N2201/1214
    • An apparatus for measuring the water content of an object to be measured comprises in combination a pair of optical filters for obtaining from the same source light a reference light having a wavelength not easily absorbed therein and a measuring light having a wavelength easily absorbable therein, an optical system for irradiating the object with the reference and measuring lights, an photoelectric converter for converting the reference and measuring lights to electrical signals, a temperature detector for detecting the temperature of the optical filters, a humidity detector for detecting the humidity of optical paths for the reference and measuring lights, extending from the optical system to the object, and a water content-measuring circuit for finding the quantity of water contained in the object on the basis of output signals produced from the photoelectric converter, temperature detector and humidity detector.
    • 用于测量被测量物体的含水量的装置包括一对光学滤光器,用于从相同的源光获得具有不容易吸收的波长的参考光和具有易于吸收的波长的测量光, 用于用参考和测量光照射物体的光学系统,用于将参考和测量光转换为电信号的光电转换器,用于检测光学滤波器的温度的温度检测器,用于检测光路的湿度的湿度检测器,用于 基于从光学系统延伸到对象的参考和测量光,以及用于基于由光电转换器,温度检测器和湿度检测器产生的输出信号来找到物体中所含的水量的含水量测量电路。
    • 2. 发明授权
    • Multi-resonant DC-to-DC converter
    • 多谐振DC-DC转换器
    • US06018468A
    • 2000-01-25
    • US838328
    • 1997-04-08
    • Michael P. ArcherJames S. Dinh
    • Michael P. ArcherJames S. Dinh
    • H02M3/337H02M3/335
    • H02M3/337Y02B70/1433
    • A DC-to-DC converter, comprising: inverter means for receiving a DC input and providing as an output a high-frequency, alternately pulsed current waveform; a control winding for receiving the output of the inverter means, the control winding being wound on a common bobbin with first and second tank windings, the windings de-coupled on the bobbin so that there is a significant leakage inductance between the windings, the first and second tank windings having two discrete resonant frequencies on a common core and flux path, a main primary winding wound in series with the control winding, the main primary winding being wound onto a separate bobbin and residing on its own core leg and flux path, first and second secondary windings coupled with the main primary winding, the first and second secondary windings being wound out of phase with each other, the first and second secondary windings feeding, respectively, first and second diodes, the first and second diodes rectifying the alternately pulse current waveform generated by high-frequency operation of the inverter means.
    • 一种DC-DC转换器,包括:反相器装置,用于接收DC输入并提供高频交替脉冲电流波形作为输出; 用于接收逆变器装置的输出的控制绕组,控制绕组缠绕在具有第一和第二槽绕组的共同绕线管上,绕组在线圈上脱耦合,使得绕组之间存在显着的漏电感,第一 以及在公共芯和磁通路径上具有两个离散谐振频率的第二槽绕组,与控制绕组串联缠绕的主初级绕组,主初级绕组缠绕在独立的线轴上并且驻留在其自身的磁芯支脚和磁通路径上, 第一和第二次级绕组与主初级绕组耦合,第一和第二次级绕组彼此异相卷绕,第一和第二次级绕组分别馈送第一和第二二极管,第一和第二二极管交替整流 由逆变器装置的高频运行产生的脉冲电流波形。
    • 3. 发明授权
    • Resonant power converter for changing the magnitude of a DC voltage
    • 谐振功率转换器,用于改变直流电压的幅度
    • US5485362A
    • 1996-01-16
    • US117818
    • 1993-09-08
    • Michael P. Archer
    • Michael P. Archer
    • H02M3/28H02M3/337H02M3/335
    • H02M3/3372H02M2001/0064Y02B70/1433Y02P80/112
    • The present invention provides a resonant power converter for changing the magnitude of a DC voltage. The converter includes a common magnetic core with three legs (an "EE" core). The core has primary and secondary windings wound onto a first outside leg, and a tank winding and control windings wound onto a second outside leg. Control switch means are provided for effecting alternate pulses of current flow through the primary winding to effectuate alternate flux flow, the control switch means and the primary winding having a predetermined parasitic capacitance with a predetermined delay time between the termination of a given pulse and initiation of the succeeding pulse. The secondary windings are oriented to conduct alternately in phase with the alternate flux flow, there being inherent in the first leg of the transformer a magnetizing inductance, such that the magnetizing current will be great enough to charge said parasitic capacitance in a controlled fashion.
    • 本发明提供一种用于改变直流电压的大小的谐振功率转换器。 该转换器包括具有三条腿(“EE”芯)的公共磁芯。 磁芯具有缠绕在第一外部支腿上的初级和次级绕组,以及缠绕在第二外部支腿上的储能箱绕组和控制绕组。 提供控制开关装置,用于实现通过初级绕组的电流的交替脉冲,以实现交替的磁通流动,控制开关装置和初级绕组具有预定的寄生电容,在给定脉冲的终止和启动之间具有预定的延迟时间 接下来的脉搏。 次级绕组被定向成与交替的磁通流交替地交替进行,变压器的第一支路固有的是磁化电感,使得磁化电流足够大以便以受控的方式对所述寄生电容充电。
    • 4. 发明授权
    • Gas discharge lamp with active crest factor correction
    • 具有积极波峰因数校正的气体放电灯
    • US5892335A
    • 1999-04-06
    • US838332
    • 1997-04-08
    • Michael P. Archer
    • Michael P. Archer
    • H05B41/28H05B37/02
    • H05B41/28
    • A new circuit for the operation of gas discharge lamps via a converter that operates directly off the rectified AC line without reactive filtering and consequently maintains good power factor and low total harmonic distortion while still maintaining an acceptable lamp current crest factor. The converter employs active crest factor correction to control the actual lamp current to a determined peak to RMS value. The design comprises two stages: a first stage with a non-linear input voltage to lamp current transfer function and a second stage having a frequency modulation to lamp current transfer function designed to cancel the first stage's transfer function at a predetermined input voltage and thus maintain constant lamp current during the correction interval.
    • 一种用于通过转换器操作气体放电灯的新电路,该转换器直接在经过整流的AC线路无功过滤之前工作,因此保持良好的功率因数和低总谐波失真,同时仍保持可接受的灯电流波峰因数。 转换器采用有源波峰因数校正,将实际灯电流控制在一个确定的峰值与RMS值之间。 该设计包括两个阶段:具有灯电流传递函数的非线性输入电压的第一阶段和具有针对灯电流传递函数的频率调制的第二阶段,其被设计为在预定的输入电压下抵消第一阶段的传递函数,从而维持 校正间隔期间恒定灯电流。