Searching:
Search by keyword, patent number, inventor, assignee, city or state:
| Patent # | Description |
|---|---|
| US-5,347,249 |
Magnet wire and electromagnetic relay using the same A polyurethane magnet wire comprising a conductor having provided thereon a polyurethane insulation coating, wherein the total amount of the phenolic compounds... |
| US-5,347,248 |
Protective switching device for difference-current and undervoltage
tripping A protective switching device with difference-current, undervoltage and free tripping in a confined space, for example within a conventional mains angle plug or... |
| US-5,347,247 |
Electro-optic component mounting device A technique is provided for integrally mounting a device such as an electro-optic device (50) in a transmission line to avoid series resonant effects. A center... |
| US-5,347,246 |
Mounting assembly for dielectric resonator device A dielectric resonator device includes an enclosure having a bottom wall, a pedestal made of quartz seated inside the enclosure on the bottom wall, a dielectric... |
| US-5,347,245 |
CATV signal splitter A signal splitter circuit accepts an input signal and conveys the input signal to two output ports. The circuit operates with minimal attenuation, throughout a... |
| US-5,347,244 |
Broadband directional coupler using cables A broadband directional coupler and method of constructing same is disclosed. The coupler is formed from a first and second coaxial cable each of which has an... |
| US-5,347,243 |
Non-contacting waveguide "T" switch A non-contacting waveguide "T" switch (10) is provided including a stator (12), a rotor (14) mounted for rotation relative to the stator, and a coaxial conductor... |
| US-5,347,242 |
Superconducting accelerating tube comprised of half-cells connected by
ring shaped elements A superconducting accelerating tube which is constructed by welding and connecting a plurality of half cells (11) formed of superconductor material in a dish... |
| US-5,347,241 |
Dual junction back-to-back microstrip four-port circulators A dual junction back-to-back four-port microstrip circulator made up of two three-port single junction circulators whose substrates lay back-to-back and are... |
| US-5,347,240 |
Circuit and method for automatically controlling the carrier frequency
of a video recording device A circuit for automatically controlling a carrier frequency of a video tape recorder includes a voltage controlled oscillator, a phase detector for generating an... |
| US-5,347,239 |
Step attenuator An RF step attenuator topology is optimized for use with GaAsFET switching devices, exploiting their high isolation while minimizing the effects of their... |
| US-5,347,238 |
Bipolar microwave monolithic voltage controlled oscillator using active
inductors A voltage controlled oscillator provides a fixed amplitude output at an adjustable frequency. The voltage controlled oscillator includes a first transistor... |
| US-5,347,237 |
Crystal oscillator A tuneable crystal oscillator arrangement includes a piezo-electric, e.g. quartz, crystal and drive current means therefor. A reactance is arranged in series... |
| US-5,347,236 |
Modulator for negative pulse activated oscillators A modulator for providing modulating voltages across the anode and cathode of a negatively pulsed magnetron includes a switch which, when activated, couples the... |
| US-5,347,235 |
Optically controlled oscillator An optically controlled oscillator circuit having an oscillator field eff transistor (FET) and having a separate light sensing quench FET. The optically... |
| US-5,347,234 |
Digital voltage controlled oscillator A digital phase lock loop is provided, comprising a digital voltage controlled oscillator, a phase detector, and an up/down counter. The digital voltage... |
| US-5,347,233 |
PLL circuit apparatus and phase difference detecting circuit apparatus A PLL circuit apparatus in accordance with the present invention includes a phase comparator, a delay circuit, a NOR circuit, and a loop filter. The phase... |
| US-5,347,232 |
Phase locked loop clock generator A phase locked loop (PLL) is disclosed, which produces a source clock signal which has a frequency twice that of a reference clock signal fed from the outside... |
| US-5,347,231 |
Low noise charge sensitive preamplifier DC stabilized without a physical
resistor The invention is a novel charge sensitive preamplifier (CSP) which has no resistor in parallel with the feedback capacitor. No resetting circuit is required to... |
| US-5,347,230 |
Amplification circuit An amplification circuit for power amplification of an audio signal or other signal includes a main power source line for supplying a driving power to a load, a... |
| US-5,347,229 |
Power amplifier with harmonically trapped heterojunction bipolar
transistor Power amplifier operating at a fixed frequency or a narrow bandwidth and based upon a non-linear gain element. The power amplifier includes a resonant circuit... |
| US-5,347,228 |
BPSK demodulator using compound phase-locked loop A BPSK demodulator having a compound phase locked loop, such as a Costas loop, is disclosed. An in-phase component, signal SI from a Costas loop demodulating... |
| US-5,347,227 |
Clock phase adjustment between duplicated clock circuits Cross coupling framing signals between two timing subsystems to adjust the phase relationship between the timing subsystems. In a standby timing system, framing... |
| US-5,347,226 |
Array spreading resistance probe (ASRP) method for profile extraction
from semiconductor chips of cellular... A semiconductor scanning resistance probe which has a support structure formed on a top surface of a substrate to form a cantilever. The support structure has a... |
| US-5,347,225 |
Network monitor and test apparatus An apparatus for monitoring and testing a twisted pair, particularly useful for an Ethernet network. First and second DC currents alternated with one another are... |
| US-5,347,224 |
Current monitoring circuit having controlled sensitivity to temperature
and supply voltage An integrated circuit including a comparator having two output states and being responsive to a voltage developed across a shunt in the circuit so that the... |
| US-5,347,223 |
Gas leak detector sensing tip with interior concentric bores and corona
current generation A gas leak detector that operates on the corona principle having a sensing tip with a pair of electrodes across which a high voltage is provided to generate a... |
| US-5,347,222 |
Signal/noise ratio optimization tuning system A signal/noise ratio optimization tuning system, which can be used for tuning receiver antennas in Magnetic Resonance Imaging receiver systems, has a... |
| US-5,347,221 |
Truncated nuclear magnetic imaging probe A truncated transmission line probe for Nuclear Magnetic and Electron Paramagnetic Resonance Imaging is disclosed. The truncated probe includes an inner and an... |
| US-5,347,220 |
Magnetic resonance apparatus comprising a bird-cage RF coil A magnetic resource apparatus includes a mainly cylindrical RF coil (9) having a longitudinal directed central axis (33) and symmetry plane (35) which contains... |
| US-5,347,219 |
Resonator arrangement for electron spin resonance spectroscopy A resonator arrangement 10 serves for electron spin resonance spectroscopy. It comprises an upper carrier plate 30, a long center portion 32, 33, 40, 41 and a... |
| US-5,347,218 |
Method and apparatus for rapid spin echo magnetic resonance imaging In a spin-echo magnetic resonance sequence a phase encoding gradient magnetic field (39) is applied after the 180.degree. rephasing pulse (32.sub.1). After... |
| US-5,347,217 |
Magnetic resonance spectroscopy and imaging In magnetic resonance spectroscopy or imaging, e.g. n.m.r. or e.s.r., a method of localizing the region of a sample from which a resonance signal is obtained by... |
| US-5,347,216 |
Fast NMR image acquisition with spectrally selective inversion pulse An NMR system performs a 3DFT scan using a set of steady-state free precession (SSFP) pulse sequences. A contrast preparation pulse sequence precedes each series... |
| US-5,347,215 |
Semiconductor chip test jig A semiconductor chip test jig for testing a chip 10 with "gull-wing" leads 11 comprises a body 20 and a cover 30. The body 20 has sets of fins or combs 23 which... |
| US-5,347,214 |
Method and device for setting the short circuit moment in electric
motors, particularly in servomotors A method and a device are proposed for setting the short circuit moment in electric motors, particularly in servomotors. for this purpose, the actual short... |
| US-5,347,213 |
Air core gauge method and apparatus with reduced power dissipation An air core gauge method and apparatus are disclosed. The apparatus receives an input signal and comprises a gauge device and driver circuit for driving the... |
| US-5,347,212 |
System and method of use for conducting a neutral corrosion survey A system and method for testing underground electric cables, while in service, for active corrosion and degree of neutral loss. The method is conducted by... |
| US-5,347,211 |
Selectable output power converter A power converter for providing a selectable desired voltage has a converter circuit having an input port for receiving an input of a first voltage and an output... |
| US-5,347,210 |
Current switch with bipolar switching transistor and .beta. compensating
circuit A current switch (30) includes a switching transistor (Q1) having a collector electrode for coupling to a first voltage source (Vcc), an emitter electrode, and a... |
| US-5,347,209 |
Voltage control in pulsed system by predict-ahead control A method and apparatus for predict-ahead pulse-to-pulse voltage control in a pulsed power supply system is disclosed. A DC power supply network is coupled to a... |
| US-5,347,208 |
Charging equipment for charging a portable apparatus and separable cell
pack Charging equipment includes a portable apparatus charging portion for receiving a portable apparatus containing a cell pack to be charged, and a simple cell pack... |
| US-5,347,207 |
Disc shaped recording medium having a zero track address and multibit
opposite polarity track addresses and an... A recording medium in the form of a disc in which locations on said disc other than a predetermined location set as a zero-address are represented by (+) side... |
| US-5,347,206 |
Vector control method of induction motor This invention provides a vector control method for controlling an induction motor that is used to drive an elevator based on secondary time constants, wherein... |
| US-5,347,205 |
Speed and mode control for a blender A blender is provided with a microprocessor for controlling energization of the blender drive motor, and a plurality of manually actuated switches for ... |
| US-5,347,204 |
Position dependent rate dampening in any active hand controller A control system for an active hand controller, for example, uses a control stick connected to and controlled by a motor. Electronics are provided to control the... |
| US-5,347,203 |
Control system, especially for film and video tape transport A control device for a film or tape transport comprises a control knob having a spindle which forms the rotor of an electric motor. The control knob is spun by... |
| US-5,347,202 |
Display device and cathode ray tube A display device comprising a deflection unit and a cathode ray tube having an in-line electron gun. The electron gun comprises a main lens portion having means... |
| US-5,347,201 |
Display device This invention is about new cathode structures involving the FEAs (field emitter arrays) and the application of these new cathode structures in EFD (Electron... |
| US-5,347,200 |
Strobe light switching arrangement with reduced transient currents A strobe lamp switching system includes first, second and third capacitors of different value for simultaneously storing energy from a DC power supply. The... |
Copyright 2008−2012 Patents.com
