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7626509 |
Solar light for home security signs
An easily deployable miniature, LED light unit specifically for home security yard signs that is rechargeable by means of a solar cell array having a light sensor which automatically activates the...
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6570341 |
Electromagnetic ballast for serially connected gaseous discharge lamps
Apparatus for sequentially igniting and serially operating a pair of high output rapid start fluorescent lamps from a source of AC voltage. The apparatus includes a transformer with a primary...
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6566824 |
Flexible lighting segment
An illumination apparatus comprises a lighting segment that includes a plurality of lighting sections. Each of the sections comprises a printed circuit board having a solid state optical emitter...
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6155694 |
Composite warning light with emission pattern matching
A multi-flash strobe light pattern is superimposed on each individual light pulse produced by an incandescent lamp to provide a warning signal of enhanced visibility in a particulate laden ambient...
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5661347 |
Circuitry arrangement for controlling a plurality of consumers, in particular lamp ballasts
In accordance with the invention the circuitry arrangement comprises a central unit (5) and a plurality of peripheral units, such as control apparatuses for lamps, connected with the central unit...
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5489771 |
LED light standard for photo- and videomicroscopy
The invention relates to a light calibration system consisting of a compact LED source with feedback control of intensity. The source is positioned in the focal plane of the microscope objective...
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5008595 |
Ornamental light display apparatus
Ornamental and decorative light display utilizing LEDs constructed of two or more individual diodes. Each diode or portion of a diode is alternately selected and energized at a sufficient frequency...
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4788475 |
Multiple discharge device hid lamp with preferential starting
A high intensity discharge lamp having a plurality of discharge device, and a starting aid for preferentially starting one of the discharge devices. Upon initial application of power to the lamp...
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4751434 |
Self-illuminated sealed cool light display and method
The invention comprises a fluid-tight light box containing a cold cathode light source activated by a high frequency ballast circuit small enough to be contained in the box. At least the box bottom...
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4570209 |
Indoor lighting arrangement employing high intensity discharge light sources
An indoor lighting arrangement employing a combination of high pressure sodium (HPS) light sources, which produce a yellowish light, and mercury vapor or metal halide light sources, which produce a...
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4390814 |
Lighting apparatus
Lighting apparatus for independently controlling the lighting level in several areas or zones. For example, each zone has two fluorescent lamp units, one connected between the power lines through...
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4287454 |
High pressure discharge lamps with fast restart
A light source including two high intensity discharge devices, such as metal vapor discharge tubes, electrically coupled in parallel to provide fast restart and immediate illumination after a...
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4177782 |
Ignition system providing sparks for two ignition plugs in each cylinder from a single ignition coil
Two ignition plugs are provided for each cylinder of an engine. Since it is desirable that these two plugs be sparked by one ignition coil, separate output terminal of a secondary coil of the...
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3917976 |
Starting and operating circuit for gaseous discharge lamps
Operating circuits for gaseous discharge lamps, such as those of metal vapor type, having ballast devices of conventional type are provided with high voltage generating means for applying high...
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3871761 |
ELECTROPHOTOGRAPHIC FLASH SYSTEM
A flash system for an electrophotographic reproduction apparatus is provided comprising a flash exposure station, a flash fusing station, a flash power supply, and control circuit means for...
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3824432 |
BATTERY IGNITER
A battery igniter particularly suitable for lighters. The igniter uses a battery as the energy source which in turn feeds a voltage converter including an oscillating transformer with a feedback...
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3818277 |
START DEVICE FOR BATTERY IGNITER
An electronic starting circuit including a battery for igniting a lighter. The circuit includes a spark discharge gap for igniting the gas of the lighter. The circuit itself includes an oscillating...
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3813581 |
SPARK IGNITER FOR A PLURALITY OF GAS BURNERS
A spark ignition system for a plurality of gas burners providing for operation of a plurality of spark ignition circuits from one a.c. source, with each of the ignition circuits having a voltage...
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3704393 |
CAPACITOR DISCHARGE TYPE BLASTING MACHINES
Capacitor discharge blasting machines for initiating electro-explosive devices, e.g., electric blasting caps which comprises in combination, means for supplying direct current at a controlled rate...
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3585442 |
FLASHLAMP CIRCUIT HAVING AUTOMATIC LIGHT TERMINATION MEANS
A flash tube has its flash extinguished by operation of a quench tube or switch tube which, when operated, short circuits the flash tube. The quench tube is set into operation (to stop the flash of...
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3571609 |
IGNITION APPARATUS SELECTIVELY OPERABLE AT DIFFERENT LEVELS OF DISCHARGE ENERGY
Ignition apparatus selectively operable to produce sparks at any of a plurality of energy levels. The apparatus includes a chargeable and dischargeable network having one common terminal, a...
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3569779 |
HIGH VOLTAGE POWER SUPPLY FOR A FLASH DISCHARGE LAMP
A power supply for a flash discharge lamp includes a capacitor and a voltage divider in parallel. A gas discharge tube is in parallel with a first part of the voltage divider and a controlled...
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3525901 |
FLUORESCENT LAMP STARTING AND OPERATING CIRCUIT WITH A PULSE STARTER
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3519879 |
FLASH APPARATUS WITH AUTOMATIC LIGHT TERMINATION HAVING GATING AND ANTICIPATION MEANS
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3517255 |
FLASH APPARATUS WITH AUTOMATIC LIGHT TERMINATION USING LIGHT ACTIVATED SILICON CONTROLLED RECTIFIER
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3510725 |
IGNITION CIRCUIT FOR AN ARC DISCHARGE LAMP
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3504229 |
MAGNETIC IGNITION SYSTEM
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3497768 |
ONE SHOT OPERATION CIRCUIT FOR A GAS DISCHARGE LAMP
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3476977 |
IMPULSE STARTING AND OPERATING CIRCUIT FOR GAS DISCHARGE LAMPS
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3475647 |
PHOTOFLASH SYSTEM WITH A SETTING CONDENSER AND A MAIN CONDENSER IN PARALLEL ACROSS THE DISCHARGE LAMP
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3472994 |
ELECTRICAL DISCHARGE MACHINING APPARATUS FOR MULTIPLE ELECTRODES
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3424945 |
CONTROLLED CAPACITOR-DISCHARGE GAS TURBINE IGNITION SYSTEM
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3400302 |
Electric igniter system for fuel burners and the like
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3383553 |
Spark ignition apparatus
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3323006 |
Ballast for operating electric discharge lamps in conjunction with a companion ballast
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3323013 |
Systems and ballast apparatus for operating fluorescent lamps at preselected levels of illumination
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3316445 |
Transistorized power supply for a storage capacitor with a regulating feedback control
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3275884 |
Electrical apparatus for generating current pulses
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3267329 |
Electrical ignition apparatus using a high voltage breakdown and a condenser followup through the ignition gap
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3264825 |
Gas turbine jet propulsion engine igniter
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3231782 |
Electrical stock removal method and apparatus
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3222588 |
Series resistor-condenser starter for a transistorized oscillator
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3174076 |
Electric system for discharge device utilizing resonant circuit to provide constant current output
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3141111 |
Spark gap trigger circuit
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3119047 |
Carrier current control system for electronic flash units
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3105170 |
Apparatus for charging and regulating the voltage across a capacitor
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3024386 |
Capacitor flash light system
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3011094 |
Circuit arrangement for electronic flash units with economizing operation
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2993144 |
Resonant pulsing circuit
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2977506 |
Electronic ignition system
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