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Patent Searching and Data


Matches 651 - 700 out of 2,087

Document Document Title
JPH0921835A
To simplify constitution and shorten computation time by providing a zero phase detection part for detecting the voltage zero phase, a phase error correction part for correcting sampling errors of a digital control system and the like. A...  
JPH0915276A
PURPOSE: To make it possible to measure phase difference with high resolution and high accuracy. CONSTITUTION: A waveform shaping circuit 2a shapes the waveform of a signal to be measured. A phase shifter 3 makes the phase of a reference...  
JP2572575B2  
JP2521658Y2  
JP2559103B2  
JP2560007B2  
JPH08316826A
PURPOSE: To incorporate a device generating an operating clock synchronism with an external clock into a microcomputer with a comparatively small circuit area. CONSTITUTION: A signal period detection circuit 3 coding a period of an exter...  
JPH08304484A
PURPOSE: To detect a voltage of a power source or a phase of a current without being influenced by a distortion of the voltage of the power source, by integrating an angular velocity output from an adding means and outputting an integrat...  
JPH08304483A
PURPOSE: To correctly obtain a power source phase with a high detection frequency by compensating for a phase error detected with a first frequency by means of a second frequency. CONSTITUTION: The apparatus has an angular velocity opera...  
JP2554511B2  
JPH08298457A
PURPOSE: To set the number of bits optionally by comparing phase differences of two input signals and providing a specific pulse signal when it is detected that the phase difference is within a preset phase difference. CONSTITUTION: An i...  
JPH08262075A
PURPOSE: To enable accurate measurement of a phase difference even when the frequency, amplitude and DC level of a measuring signal are varied. CONSTITUTION: A signal for correction of which the phase difference is known is prepared from...  
JPH08248071A
To enhance the phase resolution by providing a memory for temporarily storing a binary word, and the like. A reference signal R is fed to the input terminal of a shift register 1 which is clocked by a master clock TM and a slave clock TS...  
JP2534686B2  
JPH08233839A
To provide an X-ray device suitable for a driving motor of a rotary anode such as an induction motor in which only a small phase angle change is measured between at a stopping state and at an operating rotary speed. The apparatus consist...  
JPH08220156A
PURPOSE: To facilitate countermeasure against corona while reducing the size by providing an antenna having an electrode for detecting the ground voltage and transmitting/receiving the radio wave, i.e., providing an antenna also serving ...  
JP2527008B2  
JP2527011B2  
JP2527009B2  
JP2523890B2  
JPH08201452A
PURPOSE: To provide a highly reliable phase measuring apparatus which operates definitely. CONSTITUTION: The phase difference measuring apparatus comprises a circuit 24 for detecting the phase difference between first and second input si...  
JPH08201182A
PURPOSE: To easily and accurately detect the phase difference between light signal and electrical signal by directly calculating the product of a voltage signal and a light signal by a photoconductive type light receiver and detecting th...  
JPH08194024A
PURPOSE: To provide a phase difference detection circuit capable of highly precisely detecting a phase difference between a measured signal of frequency corresponding to the number of rotation of a motor, etc., and a standard signal. CON...  
JP2543313B2
PURPOSE: To detect the ground fault of an isolated or high-resistance-grounded three-phase one-circuit transmission line with a phase voltage detector installed to one phase and, at the same time, to detect the ground-fault phase. CONSTI...  
JPH08178981A
PURPOSE: To highly accurately detect a slight shift in phase by accumulating difference between a monitored waveform at a sampling point and a reference waveform and determining the shift in phase from the direction of a fluctuation in t...  
JP2533432B2
PURPOSE: To provide a circuit for detecting voltage applied to a measurement object and a time interval corresponding to the phase difference of current flowing through the object, using the less quantity of parts including transistors, ...  
JPH08146056A
PURPOSE: To simplify the configuration of a controller by accurately detecting the phase difference of two signals with a slight phase difference and at the same time, using a phase difference detection circuit. CONSTITUTION: The phase d...  
JPH08149173A
PURPOSE: To provide an absolute phase detection circuit by subtracting a mean value of difference information for a synchronization word block from phase information so as to process absolute phase processing thereby eliminating the need...  
JPH08146055A
PURPOSE: To accurately measure the phase difference of a target signal in a signal transmission circuit including a large noise signal. CONSTITUTION: In a signal transmission circuit 2, a voltage detector 3 and a current detector 4 are a...  
JP2505247B2  
JPH08136596A
PURPOSE: To obtain a phase-difference measuring apparatus by which the phase difference (the very small time difference) between two signals at an identical frequency can be measured with high accuracy by reducing the required number of ...  
JPH08116253A
PURPOSE: To output control signal of the same pulse width independently of a lead phase of any clock signal so long as the phase difference between two clock signals is the same. CONSTITUTION: N-channel MOS TRs 2, 3 are connected in para...  
JPH08105923A
PURPOSE: To provide a zero adjusting device and a method therefor in which a zero adjustment can be easily, smoothly and precisely performed by one push of a switch by use of a digital circuit, and stably kept for a long time. CONSTITUTI...  
JPH08101235A
To provide a digital method and device, which enable the accurate measurement even in the case where an analog/digital converter includes an allowable tolerance and a drift around an operating point is generated. (multiplexer). Direct cu...  
JPH08103020A
PURPOSE: To eliminate erroneous judgment of a step-out even when a power system is fluctuated near a the limit. CONSTITUTION: The step-out detector for a power system comprises a measuring unit 2 for detecting various electric quantities...  
JPH08503077A
(57) The 1st electric circuit (6) that offers the 1st police box electrical signal mainly generated by the electromagnetic interaction between the speed of the conducting fluid which flows in the direction in which a summary magnetism fl...  
JPH0882643A
PURPOSE: To obtain a pulse phase difference encoding circuit of which the range of errors is uniform and the precision is excellent. CONSTITUTION: This circuit is equipped with a pulse circling circuit 10 formed of a large number of inve...  
JPH0875876A
PURPOSE: To provide stable pulse phase difference data of a plurality of pulse signals sent at irregular timing. CONSTITUTION: A first pulse signal PA and a plurality of detected pulse signals PB at different timing are sent to a pulse p...  
JPH0879323A
PURPOSE: To obtain a clock phase detection circuit in which a clock phase at a sampling time is detected from a digital modulation signal having only a specific frequency component. CONSTITUTION: A chirp conversion circuit 2 applies chir...  
JPH0827306B2  
JPH0827305B2  
JPH0812214B2  
JPH0812561B2  
JPH0821856A
PURPOSE: To provide a synchronization type signal detecting device capable of measuring a high-speed phenomenon with good accuracy and capable of being miniaturized. CONSTITUTION: The measured signal II is received by a conductive detect...  
JPH07311228A
PURPOSE: To provide a phase-difference detecting circuit, wherein the phases of an inverter and a commercial power supply are aligned. CONSTITUTION: An inverter output-voltage waveform Vi is subtrated from a commercial voltage waveform V...  
JPH07106023B2  
JPH07283722A
PURPOSE: To provide a digital control type PLL device and also to provide a pulse generator and a frequency variable oscillator which are suitable to construct the PLL device. CONSTITUTION: A PLL device divides a data obtained by coding ...  
JPH07509051A  
JPH0789128B2  
JPH0787452B2  

Matches 651 - 700 out of 2,087