|
Match
|
Document |
Document Title |
|
|
5343383 |
Rectifier for DC/DC converter
A rectifier for a DC/DC converter includes first and second FETs, first and second capacitors, and first and second resistors. The first FET is connected in series with the secondary winding of a...
|
|
|
5341279 |
Switching power supply circuit providing reduced power loss upon termination of operation of a starting power supply circuit
A switching power supply circuit includes a DC/DC converter, a control circuit, a first auxiliary power supply circuit, and a second auxiliary power supply circuit. The DC/DC converter has a...
|
|
|
5258901 |
Holdover circuit for AC-to-DC converters
Holdover circuitry for an off line switcher, including a DC-to-DC converter, maximizes holdover time, during source voltage failures, by commutating a precharged holdover capacitor to the input of...
|
|
|
5256889 |
Semiconductor rectifying diode with PN geometry
A semiconductor rectifying diode includes a first semiconductor region of one conductivity type, a plurality of third semiconductor regions of the other conductivity type provided on one surface of...
|
|
|
5237140 |
a-c/d-c microwave oven
An a-c/d-c microwave oven adapted to be connected to an a-c and/or d-c power source. The oven has an inverter for converting d-c power to a-c power to feed power to a magnetron generating...
|
|
|
5091837 |
Regulated power supply with electrically isolated control and variable impedance means in series with on-off control means
In a regulated power supply, particularly a pulse-width-modulated supply, the on-off control is located in the feedback path between the supply output terminal and the pulse-width-modulator....
|
|
|
5088016 |
Voltage-compliant DC-DC converter module
A voltage-compliant power converter module which converts power from an input source for delivery to a load, the load being external to the voltage-compliant converter module and including an...
|
|
|
5079686 |
Enhancement-mode zero-current switching converter
An enhancement-mode converter module, which converts power from an input source for delivery to a load in a series of quantized energy transfer cycles, includes a zero-current switching converter,...
|
|
|
5075821 |
DC to DC converter apparatus
An improved DC to DC converter apparatus including a metal-backed PC board which serves as the base plate of the device and has the principal power consuming components affixed thereto, and a...
|
|
|
5068775 |
High dynamic performance DC-DC converter system with time share control
A high dynamic performance, DC-DC converter system with time sharing cont is described, comprising at least one main control circuit loop for a direct output voltage and at least one further...
|
|
|
5036449 |
Power supply and method for producing high voltage high power outputs in response to variable voltage DC inputs
A power supply for converting a variable DC input potential (12) to a regulated DC output potential in accordance with the invention includes a plurality of DC to DC converters (300), each...
|
|
|
5034871 |
DC to DC converter with steady control of output DC voltage by monitoring output DC current
A constant dc current supplying circuit comprises a dc voltage supply, an inverter providing an ac voltage from said dc voltage, and an ac-to-dc converter providing a dc current from the inverter...
|
|
|
4999568 |
Switching power supply comprising pair of converters for obtaining constant or sinusoidal input current and fixed or variable output voltage
The switching power supply has high output power, high efficiency and fixed or variable output voltage. The input voltage may be AC or DC. Preferably, the input current is constant. Smallest...
|
|
|
4991075 |
Low-switching loss DC-DC converter
A DC-DC converter comprises a switching element having a rise time t on and a fall time t off ; a control device for controlling the switching operation of the switching element; a transformer...
|
|
|
4977491 |
High frequency transformer with a printed circuit winding in particular for a very high voltage power supply
A high frequency transformer is made on a magnetic circuit which can be of a generally square shape. The secondary windings are made on printed circuit plates, separated by insulators and traversed...
|
|
|
4866586 |
Shoot-through resistant DC/DC power converter
A DC/DC power converter 10 which avoids shoot-through current by employing an energy storage fly-back inductor 27 having two separate primary windings 28 and 29, one for current in each direction....
|
|
|
4864482 |
Conversion circuit for limiting inrush current
A conversion circuit is provided which includes a negative temperature coefficient resistance between a rectifier and a storage capacitor to limit inrush current when power is applied to the...
|
|
|
4789790 |
Digital equipment
Digital equipment such as an electronic computer comprises a memory unit, an operation unit and a processing unit. In the digital equipment, a short-time service interruption compensation means in...
|
|
|
4745538 |
Electrical power supplies
A switched-mode power supply having a main output (O/P1) and one or more other outputs (O/P2, O/P3 and O/P4), wherein the outputs are regulated both by flyback control and forward control and...
|
|
|
4720775 |
Inverter having saturating current transformer core for maintaining inverter current above minimum predetermined level
A high frequency switching regulator drives plural loads by way of an output transformer. The transformer includes plural secondary windings connected to plural loads. One of the secondary windings...
|
|
|
4689605 |
Powering device for transmitters and receivers of a signal transmission system
In a signal transmission system whose transmission line (16) is connected to a line side component (66, 68) of a respective transmitter (12) and receiver (14) and is electrically isolated from the...
|
|
|
4648015 |
Filter capacitor discharge circuit for a DC-DC converter
A power supply circuit includes a battery power source connected by a switch to the input of a DC to DC converter. The output of the DC to DC converter is connected to a filter capacitor and a...
|
|
|
4636927 |
DC to AC converter
A DC to AC converter has a linear output amplifier for simplification and for reducing distortion and output noise. A DC to DC converter or converters provides outputs regulated to have small...
|
|
|
4603288 |
Dual regulated power supply
A dual regulated DC power supply produces an output voltage which is the sum of a variable DC control voltage and a floating DC voltage. The control voltage, generated by a first differential...
|
|
|
4595972 |
On/off power detector
This on/off power detector includes an input connected directly to a power source and input connected to the power source through a switch. The detector compares voltages on the two inputs to...
|
|
|
4591962 |
Regulated power supply for rapid no-load to full-load transitions
The power supply converts alternating current voltage to a direct current voltage which is in turn converted to a pulse width modulated voltage. A circuit arrangement is provided responsive to the...
|
|
|
4571666 |
D.C-D.C. converter for converting an unstabilized D.C.-voltage to three stabilized D.C.-voltages
A DC-DC converter converts an incoming unstabilized D.C. voltage to three stabilized output D.C. voltages. The converter contains two chopper stages (1, 2) with associated transformers, rectifiers...
|
|
|
4536733 |
High frequency inverter transformer for power supplies
A low leakage inductance inverter transformer utilizing a torodial ferrite core having a primary winding wound thereon, with the secondary winding constructed from stamped conductive clips ranged...
|
|
|
4468723 |
Magnetically regulated power supply
Apparatus is disclosed for controlling the regulating inductance of a power supply by applying across a control winding mounted on the same core a voltage having a volt-second product proportional...
|
|
|
4365288 |
Electric power converter for recreational vehicle
A converter adapted to be mounted within an opening in a wall of a recreational vehicle comprising a receptacle adapted to be received within the opening and an openable cover plate attached to the...
|
|
|
4350891 |
Low ripple regulated X-ray tube power supply
A low ripple high voltage power supply is disclosed for use in a dental X-ray system, utilizing a rectifier and regulator circuit to provide a low voltage regulated DC signal, a DC-AC converter for...
|
|
|
4336582 |
Energy saving DC-DC converter circuit
An energy saving DC-DC converter circuit is disclosed having two energy efficient means which operate in tandem, an energy conserving means (30, 8, 1) and a voltage doubling means (26). These...
|
|
|
4333133 |
Power source with an electronic impedance changer
A circuit arrangement to provide a fixed voltage source in series with an arbitrarily chosen impedance of any magnitude and phase shift having very low power dissipation and capable of being...
|
|
|
4307440 |
Stabilized switching voltage regulator comprising means for preventing overloads due to initial surge currents
A switching voltage regulator (86) is controlled to produce a low output voltage when the power is first turned on and subsequently to produce a high output voltage after a predetermined length of...
|
|
|
4282567 |
Modified power transformer for self-oscillating converter regulator power supply
The ferromagnetic core of a transformer in a switching regulator power supply is configured to improve the efficiency of the supply. Since the switching times and their resultant losses occupy a...
|
|
|
4162441 |
Apparatus for control of DC power by electromagnetic induction
Apparatus for control of direct current by means of systematic switching and progressive variation of magnetic flux in associated magnetic paths. Subdivision of the input DC power between two...
|
|
|
4161650 |
Self-powered fiber optic interconnect system
A self-powered fiber optic interconnect system in which electrical output from data transmitting equipment is converted in a transmitter unit to optical signals in a fiber optic cable for...
|
|
|
4128866 |
Power supply with current foldback
Power supply having means for developing a voltage overload signal representing a current overload condition in the power supply and then reducing the output current from the power supply as a...
|
|
|
4091434 |
Surge current protection circuit
A surge current protection circuit includes an input terminal supplied with a rectified alternating voltage, an output terminal to be connected to a load, and a semiconductor controlled rectifier...
|
|
|
4041364 |
Electromagnetically shielded electrical converter and an improved electromagnetic shield therefor
Electromagnetic interference shields are connected to electrical reference points from specially selected null or "center tap" connection points where noise voltages induced in the surface of the...
|
|
|
3965408 |
Controlled ferroresonant transformer regulated power supply
Standard configuration a.c. power transformer core sections are combined with standard configuration solenoid winding sections to provide a saturable core transformer which is arranged to be driven...
|
|
|
3963975 |
Electromagnetically shielded electrical power supply with reduced common mode electromagnetic interference output
A signal pickup means is provided in a power supply having an inverter driven transformer therewithin for producing a cancellation signal substantially equal in magnitude and opposite in phase with...
|
|
|
3947703 |
Regulated supply units
In a regulated supply unit comprising a transistor bridge across one diagonal of which is connected the D.C. voltage source and from the other diagonal of which is outputted the regulated voltage...
|
|
|
3931564 |
Apparatus for the direct conversion of the kinetic energy of charged particles
Apparatus for converting the output of a high voltage D.C. source to a lower voltage and a higher current comprising a plurality of power conversion modules connected electrically in series across...
|
|
|
3879649 |
Selectable rectified alternating voltage power supply
A power supply is provided wherein a plurality of rectified alternating voltages originating from a single transformer or equivalent are coupled to a plurality of loads and characterized in that at...
|
|
|
3869658 |
DIRECT CURENT SUPPLY WITH RIBBLE SUPPRESSION
A circuit arrangement for supplying a direct current, which is free from interruptions, from an alternating line current. The circuit includes: a first rectifier which initially rectifies the line...
|
|
|
3863140 |
REGULATED POWER SUPPLY INCLUDING FORWARD FEED
A regulated power supply having a regulator connected between a source of unregulated voltage and the primary winding of a transformer. The output terminals of the supply are connected to the...
|
|
|
3860864 |
POWER SUPPLY CIRCUITS
A power supply circuit including a charge storage device, a pulse generating circuit which charges the device incrementally and a level detector circuit for preventing the further supply of...
|
|
|
3851239 |
HIGH VOLTAGE D.C. SUPPLY CIRCUIT
An improved high voltage supply for providing high d.c. output voltages from lower a.c. or d.c. voltages and which is particularly suitable for generating corona discharge voltages in...
|
|
|
3831078 |
TRANSISTOR SWITCHING NETWORK WITH REDUCED DISSIPATION
The transistor switching network comprises a power transistor, used to deliver power from a DC source to a load, which is switched at a rate at which stored charge in the transistor potentially...
|