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| Patent # | Description |
|---|---|
| US-5,790,015 |
Security apparatus A security apparatus which automatically locks a door even though a door locking operation is not performed. A security controller drives a door lock device to... |
| US-5,790,014 |
Charging a transponder in a security system A security system utilizing a key-mounted transponder achieves fast and accurate charging of the transponder by using a frequency search and acquisition phase... |
| US-5,790,013 |
Electronic novelty device and method of using same A novelty device and method of using it, include at least three lamp sockets, and at least three lamps, which are each capable of producing at least three... |
| US-5,790,012 |
Variable resistor There is provided a variable resistor having a small number of parts and having an excellent heat releasing property. A rotor is rotatably contained in a concave... |
| US-5,790,011 |
Positive characteristics thermistor device with a porosity occupying
rate in an outer region higher than that... There is provided a positive characteristics thermistor device having excellent thermal breakdown characteristics. According to the present invention, a positive... |
| US-5,790,010 |
Means for actuating a snap-acting M-blade An electrical switch incorporating a snap-acting M-blade is actuated by a lever requiring a low actuation force and is actuated by a bridge engaging a critical... |
| US-5,790,009 |
Thermostat reset with additional electrical switch An electric coffee maker having a hot water heater, a resettable thermostat, a mechanism for resetting the thermostat, and an electrical switch connected in... |
| US-5,790,008 |
Surface-mounted fuse device with conductive terminal pad layers and
groove on side surfaces A thin film surface-mount fuse having two material subassemblies. The first subassembly includes a fusible link, its supporting substrate with a groove on side... |
| US-5,790,007 |
Board fuse, and method of manufacturing the board fuse A board fuse includes an insulating board having a through-hole window in the middle of the insulating board and fusible elements laid over the insulating board.... |
| US-5,790,006 |
Apparatus for generating uniform magnetic fields with magnetic wedges A magnetic structure generating a substantially uniform magnetic field within a region of interest comprising at least one pair of magnetic wedges of... |
| US-5,790,005 |
Low profile coupled inductors and integrated magnetics In a dc-to-dc converter, input and output inductors loosely coupled and isolation transformer windings closely coupled are implemented on a UI magnetic core in... |
| US-5,790,004 |
Electromagnetic relay An electromagnetic relay has a core and yoke that are securely attached to the base of the relay with a high degree of precision so that the operating... |
| US-5,790,003 |
Two part spacer for a high-frequency coaxial cable A spacer is indicated for a high-frequency coaxial cable with an inner conductor, a tube-shaped outer conductor and a dielectric cavity located between the two... |
| US-5,790,002 |
Two part spacer for a high-frequency coaxial cable having a protrusion
on one of the parts A spacer is indicated for a high-frequency coaxial cable with an inner conductor, a tube-shaped outer conductor and a dielectric cavity located between the two... |
| US-5,790,001 |
Shield and ceramic filter An improved shield and ceramic filter. The shield includes (i) an upright portion (16) comprising a conductive material, (ii) a chamfered portion (22) disposed... |
| US-5,790,000 |
Cascaded surface wave device filters providing balanced and unbalanced
signal connections A cascaded surface wave device filter comprises two 2-pole surface wave device filters connected in cascade. The 2-pole filters each provide a balun function... |
| US-5,789,999 |
Distributed lossy capacitive circuit element with two resistive layers A lossy capacitive circuit element, or DC scrubber, is printed on a circuit substrate and absorptively filters high frequency signals in circuit modules. A top... |
| US-5,789,998 |
Duplex dielectric filter A duplex dielectric filter is disclosed in which plural elements of the filter are merged into a single element to thereby simplify the manufacturing process and... |
| US-5,789,997 |
Bypassable wilkinson divider A power divider/combiner which can be installed flexibly, with small changes either as a divider/combiner or as a lossless transmission line. The configuration... |
| US-5,789,996 |
N-way RF power combiner/divider A combiner/divider is provided which includes a common output/input port and a plurality of N input/output ports and a plurality of N isolation ports. A... |
| US-5,789,995 |
Low loss electronic radio frequency switch A low loss electronic radio frequency (RF) switch (100) for switching RF energy between an antenna port (115), a receiver port (113) and a transmit port (101)... |
| US-5,789,994 |
Differential nonlinear transmission line circuit A differential nonlinear transmission line (NLTL) circuit has anti-parallel diode pairs along a balanced transmission line to generate well defined high-speed... |
| US-5,789,993 |
Amplitude/frequency correcting device and corresponding frequency
equalizer A device (1) for correcting the amplitude/frequency characteristic of an input signal (FI), particularly from transmission cables (40), having a minimal... |
| US-5,789,992 |
Method and apparatus for generating digital pulse width modulated signal
using multiplied component and data... A method for generating a pulse width modulated signal having a linear relationship to a digital input data signal includes generating a series of PWM component... |
| US-5,789,991 |
FSK modulating and demodulating apparatus wherein each binary data is
represented by same number of cycles of... A signal FSK-modulated with a binary data signal has first signal portions representing first logical level data contained in the binary data signal and second... |
| US-5,789,990 |
Feedback oscillator circuit using a saw resonator filter A crystal-controlled oscillator circuit is modified by the present invention by replacing the crystal with the first signal port of a two-port SAW resonator... |
| US-5,789,989 |
Delay interpolating voltage-controlled oscillator with linear transfer
function A delay interpolating voltage controlled oscillator (VCO) is provided. The delay interpolating VCO includes an input for receiving differential control input. A... |
| US-5,789,988 |
Clock recovery circuit for QAM demodulator In a clock recovery circuit in a demodulator of a multi-level quadrature amplitude modulation (QAM) system, an analog/digital (A/D) converter performs an A/D... |
| US-5,789,987 |
Low-noise frequency synthesizer A frequency synthesizer (100) is utilized for producing an output signal (124) which is phase locked to a reference signal (110) operating at a reference... |
| US-5,789,986 |
Frequency controlled bias generator for stabilizing clock generation
circuits The present invention is a frequency controlled bias generator for stabilizing clock generation circuits. The invention includes a Bias VCO and a clock feedback... |
| US-5,789,985 |
Frequency multiplying device and digitally-controlled oscillator A frequency multiplying device which multiplies the frequency of an externally-supplied reference signal PREF includes a digitally-controlled oscillation... |
| US-5,789,984 |
RF power amplifiers A radio frequency (r.f.) amplifier power control system comprises an r.f. power amplifier for supplying r.f. transmission power to an antenna, a current sensing... |
| US-5,789,983 |
High-frequency amplifier having variable gain in response to input power
level A semiconductor amplifier such as a high-frequency amplifier has a barrier-gate transistor FETQ1 and a circuit connected to the gate of the barrier-gate... |
| US-5,789,982 |
Low distortion feedback IC amplifier and method Circuits and methods to minimize total harmonic distortion in an integrated circuit feedback amplifier. Complementary transistors in the signal path are selected... |
| US-5,789,981 |
High-gain operational transconductance amplifier offering improved
bandwidth A high-gain, low-power transconductance amplifier suitable for use in switched-capacitor circuits provides improved accuracy and high-speed operation. The... |
| US-5,789,980 |
Amplifier and semiconductor device which are operated at a low voltage An amplifier and a semiconductor device according to the present invention are operated at a low voltage and decreased in size and problems such as a noise and... |
| US-5,789,979 |
Reduction of excessive spectral power distribution from class-C
saturated amplification of a pulsed-carrier signal In an amplifier for amplifying a pulsed sinusoidal carrier signal, wherein the amplifier employs an amplifier element operative as Class-C with a saturation... |
| US-5,789,978 |
Ku-band linearizer bridge A Ku-band integrated pre-distortion type linearizer bridge circuit for use in linearizing the performance of a traveling wave tube amplifier. The linearizer... |
| US-5,789,977 |
Audio amplifier An audio amplifier (20) which includes an arrangement (300) for influencing an audio signal applied to the audio amplifier (20). This arrangement (300) has an... |
| US-5,789,976 |
Digital adaptive control of feedforward amplifier using frequency domain
cancellation A feedforward amplifier system comprises a main amplifier and an auxiliary amplifier. An input signal including one carrier signal used as a first pilot signal,... |
| US-5,789,975 |
Analog signal amplifier and audio signal amplifier An input limiting circuit limits the maximum signal voltage value of input signal voltage supplied from a signal source through an input terminal. A power... |
| US-5,789,974 |
Calibrating the DC-offset of amplifiers The dc-offset voltage of an amplifier is calibrated by: (1) configuring the amplifier as a comparator, (2) using the output of the comparator to drive the... |
| US-5,789,973 |
Resistorless operational transconductance amplifier circuit A resistorless amplifier circuit uses integrated operational transconductance amplifiers to realize a plurality of circuit transfer functions. The preferred... |
| US-5,789,972 |
Regulated reference voltage generator having feedback to provide a
stable voltage An inverter receives an energizing voltage with a particular magnitude (e.g. 1.5 V) at a first terminal and produces the voltage at a second terminal. The... |
| US-5,789,971 |
Protection circuit and method for power transistors, voltage regulator
using the same A protection circuit for at least one power transistor which has at least one control terminal and two main conduction terminals defining a main conduction path... |
| US-5,789,970 |
Static, low current, low voltage sensing circuit for sensing the state
of a fuse device A static, self-biased, low current sensing circuit for sensing the state of a fuse. A first branch includes a first sensing transistor, a first fuse coupled to a... |
| US-5,789,969 |
Digital delay circuit and method A digital delay circuit structure includes a digital calibration circuit and a digital delayed signal generator. The digital delay circuit is automatically... |
| US-5,789,968 |
Controllable semiconductor switch An integrated semiconductor circuit comprising an output terminal connected to a ground terminal via a series connection of a first switching transistor and a... |
| US-5,789,967 |
Semiconductor device with boost voltage supply means A boost subject circuit block selector supplies a supply voltage to a corresponding boost voltage transmission line when a block selecting signal is at... |
| US-5,789,966 |
Distributed multiplexer Signal propagation time through a transmission gate array or multiplexer is significantly reduced and output signal transition time is halved by detecting... |
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