Quotables
"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4931918 | Ringing choke converter A ringing choke converter power supply device comprising a ringing choke converter power supply for stabilizing an output voltage by an indirect feedback system; a variable impedance element provided on a primary or secondary side of the power supply; and... | 06/05/1990 |
| 4930063 | Variable resonance regulator for power supply A voltage regulator particularly adapted to A.C. distributed power systems requiring independent voltage regulation at a plurality of frequency responsive power supply modules energized by a power source at a common alternating frequency is provided by re... | 05/29/1990 |
| 4916590 | Series resonant magnetic amplifier power supply A series resonant power supply is switched at a constant frequency above the audio range, in which a magnetic amplifier is used to control the magnitude of the output voltage. It can be run silently, while providing high power at relatively low cost. The ... | 04/10/1990 |
| 4896091 | Electric power converter The power converter (10) serves for conditioning an electricity supply for a load (12), whereby the supply is derived from a power source (11) and is adapted to the requirements of the load (12) in respect of the electrical values. The converter (10) comp... | 01/23/1990 |
| 4849874 | Single mag amp control system for regulating bipolar voltage output of a power converter A power converter embodying the principles of the invention, and having a positive and negative output utilizes a single magnetic amplifier controller to control two saturable inductor cores utilized to regulate the positive and negative outputs by modula... | 07/18/1989 |
| 4811187 | DC-DC converter with saturable reactor reset circuit A DC-DC converter having a transformer having a primary winding and a secondary winding; means for supplying DC input voltage to the primary winding; at least one switching element connected between the DC input voltage supplying means and the primary win... | 03/07/1989 |
| 4791542 | Ferroresonant power supply and method A power supply is disclosed which comprises a ferroresonant circuit, the ferroresonant circuit including a transformer with a core of magnetic material, a primary winding, a secondary winding, and reactive means coupled with at least one of the windings. ... | 12/13/1988 |
| 4736283 | Regulated voltage converter which has substantially fewer parts than prior art devices An improved switching power source in which the output of the DC input power source is switched off and on under control of switching elements of an oscillating drive circuit which is supplied to the primary side of a power source transformer and from whi... | 04/05/1988 |
| 4674022 | SCR priming and sweep-out circuit apparatus An improved priming and sweep-out circuit in which losses are obviated or minimized by transferring energy resulting from such processes back to the power supply, and wherein a single common storage inductance is used in a secondary winding circuit of a s... | 06/16/1987 |
| 4661898 | Precision constant current control with automatic compensation A circuit is provided having an alternating current input and a synchronous switch means which has a control coil--such as a saturable reactor--with the input, so as to control the energy throughput of the synchronous switch means and therefore the output... | 04/28/1987 |
| 4626976 | Switch mode power supply having magnetically controlled output A magnetically controlled switching regulator which controls an output voltage using a saturable reactor, wherein the saturable reactor is constituted by a first winding through which an output current flows and a second winding through which a reset curr... | 12/02/1986 |
| 4620144 | Self-controlled variable inductor with air gaps An electric power apparatus, namely a variable inductor comprising a magnetic core provided with a center limb and two outer limbs all having first and second ends. The first ends are interconnected through a first common point of the magnetic core, and t... | 10/28/1986 |
| 4591966 | Rectifying network An improved rectifying network employing a semiconductor diode, a saturable reactor connected in series with the diode between a pair of terminals, and means for biasing the saturable reactor to saturate the saturable reactor core for forward diode curren... | 05/27/1986 |
| 4532582 | Voltage regulator system using magnetic controllers A voltage regulator system for receiving relatively high frequency electrical energy from a source and providing a regulated relatively low frequency electrical energy output wherein a passive device sensing means comprising only electrically passive elem... | 07/30/1985 |
| 4462069 | d.c. To d.c. voltage regulator having an input protection circuit, a d.c. to d.c. inverter, a saturable reactor regulator, and main and auxiliary rectifying and filtering circuits A multiple output d.c. to d.c. regulating circuit including an input protection circuit for providing protection against input overcurrent, input transient voltages, sustained input overvoltage and input polarity reversal. The protection circuit powers a ... | 07/24/1984 |
| 4460955 | Stabilizing power supply apparatus A stabilizing power supply apparatus including, as a switching element, a magnetic amplifier supplied with a rectangular wave voltage produced by an inverter and controlled by a reset current. An error sensing circuit senses a difference between the outpu... | 07/17/1984 |
| 4451876 | Switching regulator A switching regulator of the magnetic amplifier type comprises a saturable reactor whose core ismade by winding a sheet of an amorphous metallic magnetic material into a toroidal form. The sheet thickness of the amorphous material is preferably between 4 ... | 05/29/1984 |
| 4441149 | Multi-voltage transformer input circuits with primary reactor voltage control A multi-voltage transformer input circuit, which may have multi-phase input, and where the input or each phase of the input has a primary reactor voltage control, is provided by the present invention. The primary winding of the transformer, or each phase ... | 04/03/1984 |
| 4435747 | High voltage supply system for medical equipment This disclosure relates to a system for supplying a stable DC high voltage to a load by resonantly driving a high voltage transforming circuit comprising a VLT and a capacitor type multiple boosting circuit. The system includes a VLT, a capacitor type mul... | 03/06/1984 |
| 4375077 | Power supply regulator circuit employing a transformer having a control winding A circuit for regulation of a D.C. output voltage in a switching power supply. The circuit contains a control transformer having primary, secondary and control windings. The output of the circuit is connected from the primary and secondary windings and is... | 02/22/1983 |
| 4356438 | Motor speed control system A motor speed control system utilizing a pulse duty controlling element including a core of an amorphous, magnetically soft material having a first and a second coil disposed thereon. A first set of pulses are applied to one end of the first coil while a ... | 10/26/1982 |
| 4339792 | Voltage regulator using saturable transformer A voltage regulator using a saturable transformer comprises a transformer having a primary and secondary windings, an AC power source for supplying the primary winding a fluctuating alternating current, and a rectifier connected to the secondary winding f... | 07/13/1982 |
| 4305032 | Broad band saturable reactor regulated power supply A saturable reactor regulated power supply utilizes a power oscillator to convert line voltage to a higher frequency voltage. The high frequency voltage is passed through the gate windings of a saturable reactor to an output circuit including an output po... | 12/08/1981 |
| 4302805 | Power supply utilizing a high frequency magnetic amplifier A regulated power supply includes an oscillating inverter circuit for generating a high frequency square wave signal that drives a saturable reactor which pulse-width modulates the square wave as a function of a control current through a control winding o... | 11/24/1981 |
| 4217632 | Regulated power supply system including saturable reactor means A regulated power supply system is disclosed including a source of unidirectional electric current, and at least one switch device including a saturable reactor controlled between a saturated condition and an unsaturated condition in a duty cycle such tha... | 08/12/1980 |
| 4213084 | Variable leakage transformer A variable leakage transformer or a variable voltage transformer comprising a magnetic core with a main magnetic path and a sub-magnetic path, the main magnetic path having at least a common magnetic path with the sub-magnetic path, a primary winding woun... | 07/15/1980 |
| 4130790 | Ferroresonant transformer power supply An electrical power supply for providing an electrical power signal of substantially constant voltage when the current level of the power signal is less than a predetermined value and for reducing the voltage of the power signal below said predetermined l... | 12/19/1978 |
| 4092709 | Multiple output self oscillating converter regulator power supply A multiple output switching regulator power supply operates as a self-oscillating circuit with a light weight ferrite core transformer and a sense winding used exclusively for voltage regulation purposes. A power transistor switch is employed to selective... | 05/30/1978 |
| 4055740 | Induction heating apparatus using a saturable reactor for power control purposes An induction heating apparatus includes a saturable reactor having a pair of rectangular ferrite cores. An air gap is provided in each ferrite core to provide a gradually increasing saturation characteristic on the magnetization curve of the cores. A pair... | 10/25/1977 |
| 4031452 | Stabilized power supply The stabilization of all of the output voltages of a switching power supply is obtained by varying the time of flow of the current in a semiconductor interrupter circuit with a constant interruption repetition cycle, by controlling the interrupter through... | 06/21/1977 |
| 3971975 | Switching regulator employing biased saturable core reactors A switching regulator for high current, low voltage applications includes at least one pair of biased saturable core transformers to achieve improved duty-cycle and reduced rectifier currents. Advantageously, a single bias choke may be employed with a plu... | 07/27/1976 |
