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| Patent # | Description |
|---|---|
| US-4,904,969 |
Electric circuit breaker A circuit breaker mechanism has an armature component that is slidably displaceable between latched and tripping positions. The armature is connected to a moving... |
| US-4,904,968 |
Circuit board configuration for reducing signal distortion A circuit board configuration for I/O devices and logic devices, wherein the I/O devices have current levels substantially higher than the current levels... |
| US-4,904,967 |
LC composite component An LC composite component comprises a laminated structure which is formed by stacking first and second inductor layers while holding a capacitor layer between... |
| US-4,904,966 |
Suspended substrate elliptic rat-race coupler A suspended substrate rat-race coupler utilizes an elliptic configuration of the usual circular rat-race coupler on a circuit card positioned within below... |
| US-4,904,965 |
Miniature circulator for monolithic microwave integrated circuits A miniature circulator which is microwave integrated circuit compatible and based on microstrip transmission techniques is described. The circulator includes a... |
| US-4,904,964 |
Voltage control oscillator with modulation compensation An improved voltage controlled oscillator (VCO) is provided whereby the control voltage is utilized for modulation compensation by a modulation compensation... |
| US-4,904,963 |
Staggered quadrature phase shift keyed laser modulator A staggered quadrature phase shift keyed modulator which avoids the need for timing circuits. Three phase modulators serially change the phase of a laser beam so... |
| US-4,904,962 |
Gated high stability LC stabilized oscillator A gated oscillator circuit for generating a sampling signal for digitally processing television signals, uses an LC oscillator to achieve, high frequency... |
| US-4,904,961 |
Control circuit for blocking oscillator This invention relates to a blocking oscillating converter for transferring energy from a source of power, such as a vehicle battery, to a storage means, such as... |
| US-4,904,960 |
Precision CMOS oscillator circuit A CMOS relaxation oscillator is disclosed employing a pair of capacitors and individual charging means. A noninverting amplifier comprising two cascaded... |
| US-4,904,959 |
Current-controlled saw-tooth wave oscillator stage This high-precision oscillator stage, with reduced response times, includes only NPN transistors on the signal path and comprises a threshold detector circuit... |
| US-4,904,958 |
Enhanced phase detector An enhancement for a phase locked loop, where the enhanced phase locked loop includes a phase detector having an output and first and second inputs, the... |
| US-4,904,957 |
Servo device for rapidly, and with low noise, locking the frequency and
phase of signal to that of an imposed... A device is provided for locking the frequency and phase of a signal to that of a signal imposed, of the phase locked type. It comprises a modulator mixing a... |
| US-4,904,956 |
Linear digital frequency sweep synthesizer A linear digital frequency sweep synthesizer employs an up-down counter for producing a first signal having a plurality of pulses with time interval between... |
| US-4,904,955 |
Circuit for generating two closely adjacent frequencies A circuit for generating two closely adjacent frequencies includes two oscillators each generating one of two closely adjacent frequencies. A PLL circuit is... |
| US-4,904,954 |
Ultrasonic signal amplifier circuit and system of gain control thereof A gain of a variable gain amplifier circuit is controlled by applying a signal of a predetermined voltage level to the variable gain amplifier circuit during an... |
| US-4,904,953 |
Differential amplifier with common-mode bias feedback A differential amplifier includes a pair of input transistors for directing portions of a load current from a current source through a pair of load transistors... |
| US-4,904,952 |
Differential amplifier incorporating negative resistance A differential amplifier capable of achieving a large amplification, a wide frequency range, a high common mode rejection ratio, and a wide dynamic range... |
| US-4,904,951 |
Method and circuit for reducing effects of distributed capacitance
associated with large thin film resistors A technique for reducing phase shift of a signal passing through a large thin film resistor on an insulating layer includes applying a signal to one terminal of... |
| US-4,904,950 |
Telemetry digital subcarrier demodulator A telemetry receiver for demodulating subcarrier frequencies is disclosed. The flexibility of the receiver permits it to decode signals from a wide variety of... |
| US-4,904,949 |
Synchrotron with superconducting coils and arrangement thereof A synchrotron having at least two sets of super-conducting coils, each arranged for deflecting charged particles in a curved path. The sets of superconducting... |
| US-4,904,948 |
Phase comparator circuit A phase comparator circuit for comparing a phase of a first input signal with a second input signal and outputting a first output signal and a second output... |
| US-4,904,947 |
Method and circuit for measuring pulse width A method and apparatus of measuring the pulse width of electronic pulses which may have a large variation in amplitude. An electronic pulse includes a rising... |
| US-4,904,946 |
Method for evaluating insulating films A test method is used for examining a sample insulating film to determine an expected value of time for the sample insulating film to undergo dielectric... |
| US-4,904,945 |
Apparatus and process for detecting direct current magnetic flux
deflections in an electrical transformer... An apparatus for detecting direct current magnetic flux deflection of an electrical transformer comprising a magnetic detector for generating an output voltage... |
| US-4,904,944 |
Flow measuring apparatus with analog, essentially linear output Flow measuring apparatus comprising a probe (1) coupled via a coaxial cable (2) to control circuitry with a current to voltage convertor (10), absolute value... |
| US-4,904,943 |
Method for detecting long waves and predicting earthquakes A method for detecting earthquakes comprises the steps of picking up pre-earthquake long waves or earth currents at four or more observation points located... |
| US-4,904,942 |
Electroseismic prospecting by detection of an electromagnetic signal
produced by dipolar movement A method of electroseismic prospecting is disclosed for detecting either the presence of two immiscible fluids present in a porous subterranean formation or the... |
| US-4,904,941 |
Gauge for detecting misalignment A displacement gauge or gauge for detecting misalignment (3) employs four magnetic coils (24N, etc.) 90.degree. apart, (each) energized by an oscillator (36N,... |
| US-4,904,940 |
Fiber-optic multicomponent magnetic field gradiometer for first, second
and higher order derivatives A fiber-optic magnetic field gradiometer uses a plurality of magnetic transducers to simultaneously determine multicomponents of the gradient and field strength... |
| US-4,904,939 |
Portable electronic wheel wear gauge A portable, battery powered, electronic wheel wear gauge is described for use in train wheel wear measurements. The gauge consists of a portable computer... |
| US-4,904,938 |
Method and apparatus for testing characteristics of a floppy disc and a
floppy disc drive Method and apparatus for determining the alignment of a data track on a magnetic disc, for example a floppy disc and for determining the alignment of a... |
| US-4,904,937 |
Apparatus for magnetically detecting positions with minimum length
magnetic information units recorded on a... The present invention relates to an apparatus for magnetically detecting positions and intends to provide a position detecting apparatus of the kind with high... |
| US-4,904,936 |
Automotive wheel speed sensor including ferromagnetic flux carrying cup
closing an opening in the wheel bearing... There is described a speed sensor that is particularly adapted to moving vehicles such as automobiles. A permanent magnet, stator assembly, and field coil are... |
| US-4,904,935 |
Electrical circuit board text fixture having movable platens A test fixture is provided for contacting selected terminals (10, 10') of an electrical assembly for testing by a test device (28). The fixture includes... |
| US-4,904,934 |
Testing apparatus for semiconductor devices A testing apparatus includes a turntable, a driving device for rotating the turntable by a predetermined angle, and a plurality of pallets symmetrically fixed on... |
| US-4,904,933 |
Integrated circuit probe station An integrated circuit probe station comprises a table having a substantially planar upper surface, an IC probe positioned over the table in spaced relationship... |
| US-4,904,932 |
Circuit condition monitor with integrally molded test point socket and
capacitive coupling A circuit condition monitoring system for an electrical power distribution system includes a system connector component having an integrally molded test point... |
| US-4,904,931 |
Electro-optical voltage measuring system incorporating a method and
apparatus to derive the measured voltage... The voltage between two objects is measured utilizing an electro-optic crystal exhibiting birefringence in two axes (slow and fast) mutually orthogonal to an... |
| US-4,904,930 |
Method of carrier frequency estimation A method is provided for searching a wide, high-noise frequency band for a narrow, phase-modulated signal to determine the approximate carrier frequency of a... |
| US-4,904,929 |
Method for detection of weak links in the current path of electrically
continuous superconductors Weak links in electrically continuous superconductors are detected by observing the effect of magnetic field modulation on the dc resistance of superconductors.... |
| US-4,904,928 |
Measurement apparatus and method utilizing multiple resonant modes of
microwave energy Measurement apparatus and method utilizing microwave energy. A symmetric microwave cavity is excited to oscillate in at least two identical resonant modes having... |
| US-4,904,927 |
Method for measuring a characteristic impedance and a propagation
constant of a two-port network In a method for measuring a characteristic impedance and a propagation constant of a two-port network (2), an output port (5) of the two-port network (2) is... |
| US-4,904,926 |
Magnetic motion electrical generator A magnetic motion electrical generator includes an electrical winding defining a magnetically conductive zone having bases at each end, the winding including... |
| US-4,904,925 |
Apparatus for recovering an alternating variable of a controlled
semiconductor An apparatus for recovering an alternating variable having a direct current component in a controlled semiconductor component includes an electromagnetic... |
| US-4,904,924 |
Output circuit for outputting a level shifted output signal An output circuit provides a high voltage output signal in response to a low voltage input signal. The output circuit includes a pull-up transistor for raising... |
| US-4,904,923 |
Current amplifying device Disclosed is a reversible inductive energy transfer device for use where efficient transfer of energy between inductors is required. The apparatus is a current... |
| US-4,904,922 |
Apparatus for converting between digital and analog values Output members in a matrix relationship having x and y inputs respectively receive signals in first and second pluralities cumulatively representing a digital... |
| US-4,904,921 |
Monolithic interface circuit for linear variable differential
transformers A monlithic interface circuit for use with a linear variable differential transformer (LVDT) position transducer. The interface circuit includes a drive circuit... |
| US-4,904,920 |
Method and device for operating an induction machine To reduce harmonics in an induction machine (33) which is fed by a self-commutated inverter (30), the trajectory of the flux vector of the induction machine is... |
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