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4066954 |
Frequency converter
A parallel resonant circuit frequency converter, in which, through the resonant circuit voltage picked up by a voltage sensor and the inverter output current picked up by a current sensor, a firing...
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4024449 |
Intrinsically safe power source with plural conversions
Converter circuit, in which a 50 or 60 cps a.c. voltage is converted into a d.c. voltage, the latter into an a.c. voltage of a higher frequency, e.g. 20-80 kilocycles, which is converted by way of...
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4009420 |
Solid state power controller
A solid state control system for controlling a high voltage primary power pplied to a plurality of power supplies by means of a TTL voltage level. Circuit means are provided to sense the power...
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4009419 |
Safety circuit for video diver
An underwater diver is provided with a video camera, light, and communications supplied with electrical current from the surface by a shipboard electrical circuit. The diver is protected from...
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3988661 |
Power supply system for generating constant power under maximum current conditions
A power supply system includes a plurality of power supplies having their outputs connected in parallel to provide a common voltage to an electrical load. Each power supply is self-regulating and...
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3968419 |
Direct current transmission and method of operating the same
In the operation of a bipolar direct-current transmission system having bipolar convertor stations with earthed center taps and transmission lines connecting the stations, one for each polarity, in...
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3942092 |
Cycloconverter controlled rectifier protection circuit
In a cycloconverter system, a circuit for maintaining the gate drive signal on the gate of each controlled rectifier when the gate drive command for the controlled rectifier terminates prior to the...
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3886432 |
OVERVOLTAGE PROTECTIVE CIRCUIT FOR HIGH POWER THYRISTORS
A high-power main thyristor is protected from forward voltage breakover by connecting in parallel relationship therewith an overvoltage responsive trigger scheme comprising a plurality of PNPN and...
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3879647 |
DC to DC converter with regulation having accelerated soft start into active control region of regulation and fast response overcurrent limiting features
A power supply includes a signal adjustment system to control the rate of turnon and turnoff of the signal output. The power supply comprises a switching type regulator which operates with an...
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3870946 |
Quick connect modular voltage multiplier
A multiplier module for stepping up low voltage from an external source for application to a spray gun electrode via a coaxial cable, the module being encapsulated and provided with female...
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3857070 |
SINGLE-LAMP GROUND DETECTOR FOR CONVERTER-INVERTER POWER SUPPLIES
A single-lamp ground detector is used in a converter-inverter power supply system. In can sense grounds on any one of the three busses, AC input, DC link and AC output.
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3831077 |
REGULATED, CONTROLLED-RECTIFIER POWER SUPPLY
A regulated and protected power supply in which the amount of energy delivered to a load from an A.C. source is controlled by varying the timing of the "firing-angle" when conduction is initiated...
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3829755 |
SEQUENCER FOR A MULTIPLE SWITCHING REGULATOR
The sequencer employs a variable current source, a Schmidt trigger circuit, a one-shot, a pair of master-slave flip-flops and logic gates to provide pulses for operating a multiple switching...
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3824441 |
MULTIVOLTAGE, REGULATED POWER SUPPLY WITH FAULT PROTECTION
A power supply for providing a plurality of regulated voltage levels while protecting the power supply from damage due to fault conditions. The power supply provides apparatus for rectifying AC...
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3729671 |
POWER CONTROL AND SUPERVISORY SYSTEM
There is herein disclosed an electrical power control and supervisory system for monitoring the outputs of a plurality of regulated power converters and generating error signals which are fed back...
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3675110 |
MEANS FOR DAMPING VOLTAGE OSCILLATIONS IN SOLID-STATE SWITCHING CIRCUITS
A thyristor is serially joined to an inductor and is shunted by a snubber circuit comprising a resistor in series with a capacitor. When subjected to a stepped change in voltage, the series...
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3670237 |
APPARATUS FOR THE SMOOTH SWITCHING-ON OF AN ELECTRICAL LOAD
In apparatus for the smooth switching-on of an electrical load a supply line transformer feeds a rectifier having its output connected jointly with a synchronization stage and with a run-up or...
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3609509 |
FEEDBACK CONTROL FOR CYCLOCONVERTER
The invention relates to a circuit for reducing the magnitude of the feedback in a cycloconverter of the type incorporating a phase controlled rectifier system to provide protection both against...
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3568036 |
VOLTAGE-MULTIPLIER ASSEMBLY
A voltage-multiplier assembly in which a network of solid-state diodes and capacitors are wired together and held securely at separated positions by an insulating matrix having upper and lower rows...
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3539903 |
CASCADE RECTIFIER VOLTAGE MULTIPLIER WITH RESONANCE COIL
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3506904 |
SELF-STARTING DC TO DC CONVERTERS
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3473039 |
REGULATED POWER SYSTEM
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3437903 |
PROTECTION FOR ENERGY CONVERSION SYSTEMS
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3419785 |
Power factor sensitive current limit
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3419780 |
Static synthetic sine wave inverter
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3413538 |
Control means for starting electric power converters at reduced operating frequencies
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3400321 |
Protective circuits for frequency converter system
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3394298 |
Dc power supply with load potential and polarity determined by potential and polarityof a dc input signal
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3386005 |
High-speed self-restoring solid state overcurrent protection circuit
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3323033 |
Static inverter system
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3305756 |
Combined gated pulse source-transverter-rectifier power supply with sampling connection for regulation
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3248634 |
Electronic ringing generator
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3217231 |
Low ripple rectifier
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3164767 |
Synchronization and lockout control system for controlled rectifiers
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3147094 |
Control system for electrical precipitators
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3109134 |
Overvoltage protection for electric valves
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3061768 |
High-frequency furnace
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2939067 |
Measuring circuits
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2911583 |
Protective means for use in an electric system supplied by an invertor
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3560837 |
Title is not available
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3560835 |
Title is not available
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3553567 |
Title is not available
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