摘要:
A process of leaching gold can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, the mixture containing elemental sulfur and gold and an aqueous solution of hydroxide of one or more of metals of alkali metals and alkaline earth metals are combined, the hydroxides reacting with elemental sulfur to form thiosulfate of alkali and/or alkaline earth metal, and the gold thereby being leached by reaction with the thiosulfate.
摘要:
A PLL circuit includes a polyphase reference clock output circuit that outputs reference clocks, a polyphase frequency divider circuit that outputs divided clocks, which is obtained by dividing frequencies of the reference clocks, a selection switch circuit that selects one of the reference clocks or one of the divided clocks, and outputs the selected clock as a selected clock, a digital VCO that uses the selected clock as an operating clock, and outputs delay amount data indicating a phase difference between an output clock and an ideal phase, where the output clock has a frequency that fluctuates according to a value of frequency control input data, and the ideal phase is calculated according to the output clock and the value of the frequency control input data, and a selection circuit that selects and outputs the output clock synchronized with the divided clocks according to the delay amount data.
摘要:
A PLL circuit includes a phase comparing section, a low pass filter, a digital VCO circuit, and a frequency divider. The phase comparing section compares an inputted clock signal and a frequency-divided clock signal in phase to detect a phase difference. The low pass filter averages the phase difference outputted from the phase comparing section to output the averaged result as a frequency control input. The digital VCO circuit operates in synchronism with a reference clock signal, and generates a sync clock signal based on the frequency control input while a phase of the sync clock signal is controlled in units of predetermined resolution values. The predetermined resolution value is a 1/K (K is a natural number more than 1) of a period of the reference clock signal. The frequency divider frequency-divides the synch clock signal to generate the frequency-divided clock signal.
摘要:
A PLL circuit includes a phase comparing section, a low pass filter, a digital VCO circuit, and a frequency divider. The phase comparing section compares an inputted clock signal and a frequency-divided clock signal in phase to detect a phase difference. The low pass filter averages the phase difference outputted from the phase comparing section to output the averaged result as a frequency control input. The digital VCO circuit operates in synchronism with a reference clock signal, and generates a sync clock signal based on the frequency control input while a phase of the sync clock signal is controlled in units of predetermined resolution values. The predetermined resolution value is a 1/K (K is a natural number more than 1) of a period of the reference clock signal. The frequency divider frequency-divides the synch clock signal to generate the frequency-divided clock signal.
摘要:
A PLL circuit for comparing with a phase comparator 1a phase between an input signal and one of multiphase pulse signals CK0DIV to CKNDIV used as a channel clock generated by an output of a controlled oscillator 5, and controlling an oscillation of the controlled oscillator 5 according to a phase difference signal, comprises a frequency fixing circuit 9 for outputting an activating signal PCSTART for the control when the input signal is nearly equivalent to a frequency of the channel clock and has entered into a capture range of the phase comparator and a selection circuit 7 for selecting as the channel clock a multiphase pulse signal of a closest phase to a generating point of the input signal after generation of the activating signal, and the selection circuit 7 decides whether the input signal is advanced or delayed with respect to the channel clock after having selected a multiphase pulse signal as the channel clock and generates either an advance signal or delay signal according to the advance/delay of the input signal, for controlling a skew adjusting circuit 8 with the advance signal or delay signal.
摘要:
A flexible printed circuit board is provided including a flexible sheet having at least one electrically conductive layer, with a printed circuit pattern and a fold retainer pattern formed in one of the electrically conductive layers. The fold retainer pattern is electrically isolated from the printed circuit pattern. The fold retainer pattern has notches that indicate where the sheet is to be folded when the flexible sheet is folded, it is held in its folded shape by the fold retainer pattern.
摘要:
An image processing apparatus applicable to a multi-media copying machine with which multiple different recording media are usable includes a scanner for reading a document image and converting it into an electrical image signal, a floppy disk drive, an MPU and other controllers, and a printer for printing out an image on paper. The apparatus has not only a document-to-paper copying function but also a document-to-disk copying function and a disk-to-paper copying function.
摘要:
For supplying fuel from a fuel tank to an internal combustion engine by a fuel supply pump, a fuel delivery pressure of the fuel supply pump is regulated by a pressure regulating valve so as to maintain the difference between the fuel delivery pressure of the pump and an inner pressure of an intake manifold of the engine at a prescribed constant value, and the delivery volume of fuel from the pump is controlled in response to the fuel delivery pressure so as to minimize the amount of surplus fuel produced by the pressure regulating operation of the pressure regulating valve.
摘要:
A PLL circuit includes a polyphase reference clock output circuit, which outputs multiple reference clocks, each clock being of different phase. The PLL circuit further includes a digital voltage controlled oscillator, which, using any one of the multiple reference clocks chosen as an operating clock, outputs an output clock whose frequency varies according to a value of a frequency control signal, and which outputs a delay amount data representing a phase difference between the phase of the output clock and an ideal phase gained by computing based on the value of the frequency control signal. The PLL circuit further includes a selection circuit which is responsive to the delay amount data to select and output the output clock synchronized with one of the multiple reference clocks.
摘要:
A method for manufacturing an LED device includes the steps of mounting an LED on a substrate, sealing the LED with a transparent resin including phosphor particles to form an LED device before being dyed, measuring chromaticity of light from the LED device before being dyed; and dyeing the sealing resin by a dye having a color for correcting the measured chromaticity to a desired color.