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4612455 |
Distributed pulse forming network for magnetic modulator
A pulse forming network with distributed inductance and capacitance is diosed for use in a magnetic modulator. The magnetic modulator has a magnetic core with a primary winding and a secondary...
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4608521 |
Dual spiral line generator method and apparatus for starting low wattage high intensity discharge lamps
A starter circuit for metal halide discharge lamps in which a pair of spiral line generators are coupled between the source of lamp operating power and the electrodes of the high intensity...
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4605910 |
AM pulse duration modulator
The present invention relates to a circuit for producing a switching modulating signal for switching a pulse duration modulator, so that the pulse duration modulator produces an output signal which...
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4584488 |
Controller for generating a pair of mutually exclusive pulse train signals
An electronic controller for generating a pair of mutually exclusive pulse train signals. The controller having an offset generator for biasing the input signal about a midpoint value, a first and...
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4577166 |
Miniature high performance pulsed modulator apparatus
A pulsed modulator apparatus having a ground deck clock driver unit to provide pulse stretching and on-off trigger signals for a floating deck transistor switch unit. Voltage isolation is achieved...
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4577118 |
Driving circuit for pulse current power supplies
A driving circuit for pulse current power supplies, particularly septum and kicker magnets for accelerators, with an inductance coil and a resonant circuit capacitor, has a thyratron, whose anode...
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4572964 |
Counterpulse railgun energy recovery circuit
In an electromagnetic launcher such as a railgun for propelling a projectile at high velocity, a counterpulse energy recovery circuit is employed to transfer stored inductive energy from a source...
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4567376 |
Signal generator
In a signal generator with a magnetic rest, consisting of a ferromagnetic studded disk (13) with a U-shaped part (6) consisting of a permanent magnet (3) and lateral ferromagnetic small plates...
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4550260 |
Apparatus for controlling a pulse generator
An apparatus for controlling a pulse generator includes a sensor cooperating with a rotary detecting plate for generating a pulse, as for defining the timing for the printing operation. An indexing...
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4549091 |
Electrical excitation circuit for gas lasers
An electrical excitation circuit is disclosed for a gas laser. The electrical excitation circuit includes a charging circuit connected in series with a pulse forming network between a power source...
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4547679 |
Generator for producing high-voltage rectangular pulses
A generator for producing high-voltage rectangular pulses is provided which comprises devices for conversion of input power supplied from a DC source into pulses of output power using capacitive...
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4546268 |
Narrow pulsewidth pulse generator circuit utilizing NPN microwave transistors
A pulse generator circuit for providing pulses having pulse widths in the order of one nanosecond. The circuitry utilizes NPN microwave transistors exclusively to achieve this result.
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4539488 |
Pulse wave to parabola wave converter
An electronic image framing circuit is described for eliminating the visible effects of pincushion distortion at the edges of a television image. Toward this end, portions of video lines which...
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4536723 |
High-power pulse generator using transmission line with spark discharge device
A high-frequency, high-power generator of the type in which energy is stored in the capacitance of a transmission line and then discharged into a load by the action of a spark discharge device. The...
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4507567 |
Vector inversion generator
A conducting foil strip sandwiched between a mylar sheet and a mylar tape forms a conductor-insulator strip. An inner and an outer conductor-insulator strip are spirally wound about a tube forming...
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4494011 |
High voltage nanosecond pulse generator
A high voltage pulse generator for generating at least 500 kilowatts power over a time interval of substantially two nanoseconds with short risetime, using a high voltage avalanche source, a...
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4491842 |
Frozen wave generator jammer
A high peak power, broad band, radio frequency pulse generator generates are wave pulses at a high pulse repetition frequency for use in jamming of radar, data links, voice communication, or other...
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4484085 |
Spiral line voltage pulse generator characterized by secondary winding
A spiral line voltage pulse generator includes a double arm spiral structure about which is wound an elongated conductor. The double arm structure includes two conductive strips which are...
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4482816 |
Pulse circuits
A pulse circuit forms part of a radar transmitter in which a pulse forming network is used to generate a high current pulse at relatively low voltage and to feed it via a transformer to a magnetron...
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4473875 |
Inductive storage pulse circuit device
Inductive storage pulse circuit device which is capable of delivering a series of electrical pulses to a load in a sequential manner. Silicon controlled rectifiers as well as spark gap switches can...
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4467284 |
Radio frequency storage pulser
A system for converting low amplitude continuous wave radio frequency energy into periodic high amplitude radio frequency, pulsed energy with a conversion efficiency approaching 100%. The invention...
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4463268 |
Varistors with controllable voltage versus time response and method for using the same to provide a rectangular voltage pulse
A bismuth-free, zinc oxide based varistor exhibits a controllable overshoot/undershoot voltage characteristic. The varistor is composed of zinc oxide as the primary constituent, with smaller...
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4447742 |
Device for generating an electric trigger pulse
A partitioning circuit will partition into subintervals the time interval between two signals delivered by a recognition circuit, and will activate a gate circuit during one of these intervals...
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4425511 |
Planar coil apparatus employing a stationary and a movable board
A planar coil apparatus is disclosed for providing an output signal indicative of a movement between at least a first and a second position. A first stationary planar member has disposed on a...
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4417301 |
Method and apparatus for electric fish trawling
An improved method of electric fish trawling which utilizes the fright-reaction exhibited by fish exposed to an electric field is disclosed. The method utilizes a trawling net equipped with...
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4410234 |
Timing pulse generator for scanning apparatus
A timing pulse generator for producing timing pulses the period of which is variable. In the timing pulse generator, a plurality of reference pulse trains are produced which have the same frequency...
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4379982 |
Low energy starting aid for high intensity discharge lamps
A light source, including a high pressure discharge lamp and a starting pulse generator, such as a spiral line pulse generator, utilizes a generally straight elongated conductor, or starting aid,...
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4367415 |
Pulse generator circuit
A pulse generator circuit comprises a pulse source and an output line having a specific characteristic impedance and having an input and an output end, the output end being connectable to a high...
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4356457 |
Optic floating deck modulator
An optical floating deck modulator to modulate a control element of an electron device, such as the grid of a Klystron tube or traveling wave tube, having two high power MOSFET switching devices...
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4355303 |
Receiver for a distribution network power line carrier communication system
A receiver for a distribution network power line carrier communication system is magnetically coupled to a distribution power line. A carrier signal, phase-shift keyed modulated by an information...
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4349746 |
Frequency generator
A frequency generator module has a first generator circuit and a second generator circuit, the frequencies of these circuits being variable by a physical parameter, especially a distance or angular...
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4328470 |
Pulse modulated IMPATT diode modulator
A high efficiency modulator circuit for modulating a microwave oscillator having a negative resistance device comprising an IMPATT diode disposed within a resonant cavity is presented. A first...
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4325004 |
Method and apparatus for starting high intensity discharge lamps
Method and apparatus for starting high intensity discharge lamps utilizing a spiral line pulse generator to generate high voltage, short duration starting pulses. The spiral line pulse generator...
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4274134 |
Method of and apparatus for high voltage pulse generation
This disclosure is concerned with generating in a plurality of successive modules, simultaneously and repetitively, a plurality of similar, simultaneous, narrow high voltage pulses, and adding them...
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4238692 |
Method and device for producing start pulses in periodic motion process
The production of start pulses a periodic motion process involves simultaneous generation of a basic train of pulses of a periodic motion phase, at the moment the phase is reached, and a main time...
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4236085 |
Method for producing trigger pulses in relation to preset phase of motion proceeding with continuously variable period and device for effecting same
A method for producing trigger pulses in relation to a preset phase of motion proceeding with a continuously variable period, whereby pulses are accumulated, and at the same time two time intervals...
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4214151 |
Control instrument for electric cooker plates
A control instrument is provided for electric cooker plates. The instrument comprises an adjustable quantizing power control instrument having an expansion element with an electric heating element...
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4176295 |
High peak power microwave generator using light activated switches
A high peak power microwave generator is disclosed in which a plurality of transmission lines are connected to an output wave guide at predetermined intervals along the direction of propagation....
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4176285 |
Electrical pulse generator
A technique for generating high-voltage, wide dynamic range, shaped electrical pulses in the nanosecond range. Two transmission lines are coupled together by resistive elements distributed along...
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4160209 |
Resonant circuit excitation method and apparatus
A method and apparatus using a single-frequency oscillator as a source for resonating, selectively, an infinite number of different higher-frequency resonant circuits. The oscillator signal is...
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4143605 |
Motor driven sewing machine
A motor driven sewing machine comprises pulse generator means for generating a first pulse associated with the first predetermined angular position and a second pulse associated with the second...
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4140917 |
Fast risetime spiral pulse generator
A vector inversion stacked stripline pulse generator adapted for single sch initiation consisting of a relatively long laminated assembly of alternate layers of dielectric and metallization wound...
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4135122 |
Method and apparatus for heating electrical motors and like devices
A motor heat control circuit is provided for heating an electrical motor during the time of motor shutdown, with the circuit functioning to interconnect a winding of the motor with a source of...
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4121112 |
Pulse generator
A pulse generator for the generation of pulses which are synchronously associated with the movement of a mechanical part comprises a toothed element, the teeth of which run past a pick-up head, the...
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4107630 |
Pulse-modulated high-frequency transmitter
A pulse-modulated high-frequency transmitter is pulse keyed and has a high pulse power. A self-sustained transistor oscillator has a grounded base with a collector-emitter feedback in the form of a...
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4104558 |
Tunable radio frequency pulse generators
A tunable frequency pulse generator capable of providing high energy pulses having an in-line construction includes an annularly shaped spark gap and a movable insulator support which includes a...
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4104557 |
Liquid dielectric radio frequency pulse generators
A liquid dielectric radio frequency pulse generator capable of providing high energy pulses having an in-line construction includes an annularly shaped spark gap immersed in an aprotic liquid such...
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4104538 |
Digitally synthesized back-up frequency
A digitally synthesized frequency back-up circuit which, after removal or failure of applied A.C. power, will reproduce signals precisely indicative of each zero transition point of the A.C....
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4104556 |
High energy radio frequency pulse generators
A radio frequency pulse generator capable of providing high energy pulses having an in-line construction includes an annularly shaped spark gap. The input voltage is connected to the resonant...
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4090448 |
Ferroelectric pulsed power source
A high power one-shot pulse generator comprised of a pressure chamber, crals sandwiched between electrodes and a spark gap. Pressure exerted on one of the electrodes, acting as a pusher plate,...
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