Matches 251 - 300 out of 446 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
4626697 Power supply for providing plural DC voltages  
A DC power supply capable of providing a number of output voltages, including a balanced positive and negative voltage supply for integrated circuit applications, includes a transformer having...
4623754 Element installation arrangement for installing an element in a flyback transformer  
A flyback transformer includes a bobbin and first and second holders mounted on the bobbin in a predetermined spaced relationship with each other, for holding a circuit element such as a diode. The...
4622629 Power supply system with improved transient response  
An apparatus for improving the transient response of a power supply system having an alternator for developing AC power and a rectifier for converting the alternator output into primary DC power...
4620272 Line-regenerative motor controller with current limiter  
An AC motor drive includes a power converter which supplies current to a DC bus from three-phase power lines. An inverter drives the motor from power delivered to the DC bus and it regenerates...
4608499 Power system and power generation method  
A power system includes an a-c power supply which constitutes a voltage source for a user of d-c current. The a-c power supply is designed to generate an output voltage having a trapezoidal wave...
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...
4591728 Transformerless power unit  
A transformerless power unit for an electronic apparatus, preferably a horological instrument, including a fluorescent display, with a compensating resistor network which is connected with one pole...
4587606 High voltage transformer and rectifier arrangement  
A secondary winding, divided into a plurality of sections, is provided around a primary winding of the air-core type. First and second diode groups are disposed on four substrates which surround...
4586122 Power enhancer  
A device for reducing electrical energy consumption is disclosed. The device is operated by a pulse type voltage source which may be a pulsating direct current or a rectified alternating current....
4580206 Voltage clamp regulator  
A 12 volt input is supplied to a timer providing a square wave output with an approximately 50% duty cycle. The output is applied to the bases of a pair of transistors and the collectors of the...
4569010 High voltage power supply  
A compact high voltage power supply includes a high voltage transformer 4 with individual concentric secondaries S1, S2, . . . , connected to form a ladder network with two series-connected...
4559594 Electrostatic air cleaner and high voltage power source therefor  
Electrostatic air cleaner apparatus is disclosed for use in conjunction with existing space conditioning apparatus which includes a transformer providing a low voltage (typically 24VAC) power...
4558406 Transformer for generating high DC voltages with integrated means for cooling rectifiers  
A transformer arrangement for generating rectified, high voltages has a primary winding wound around the transformer core and is surrounded by a metallic shield. A mass of insulation material,...
4555753 Rectifier circuit with two rectifiers  
In addition to a conventional rectifier responsive to an input AC voltage, another or second rectifier is employed such that the input AC voltage is first reduced to be applied to the second...
4555751 Rectified and smoothed DC supplying circuitry  
A DC power supply circuitry comprises an AC power source transformer with its secondary winding having a center tap; a rectifier circuit; a smoothing circuit; and a bidirectional switching circuit...
4549130 Low leakage transformers for efficient line isolation in VHF switching power supplies  
A transformer assembly suitable for use in very high frequency (VHF) switching power supplies that maintains a low leakage inductance between critical transformer windings while complying with the...
4546305 Mains-voltage discrimination device  
A supply-voltage discrimination device for adapting a load (8) to a lower or higher alternating-voltage range includes a voltage-dependent resistor (1) thermally coupled to a PTC-resistor (2) and...
4545005 High-voltage supply for an X-ray generator  
In order to increase the resonance frequency of a transformer, the secondary winding is divided into several (identical) coils, which are each connected to a corresponding individual bridge...
4527229 Flyback transformer with high voltage variable resistor built therein  
A high voltage variable resistor section (8) for deriving the focusing voltage and screen is attached to an open portion formed on one surface of a first case (47) which receives primary and...
4521841 Peak charging circuit providing for improved loop gain and common mode noise rejection  
Circuitry for use in the current control loop of switched mode power supplies which in a first embodiment increases the a-c gain of that loop. In a second embodiment the circuit rejects common mode...
4513363 Structure for and method of reducing impedance in multiphase direct current power supplies  
Structure for and method of eliminating impedance in multiphase direct current power supplies comprising connecting transformer primary windings in Y configuration with contactor structure, whereby...
4509109 Electronically controlled coil assembly  
Electronically controlled coil assembly for use in electrical and electronic applications such as tuned circuits, transformers, and devices which require or utilize a moving magnetic field. The...
4507571 Optically coupled input circuit for digital control  
An a.c. input circuit for converting a sensed a.c. voltage into a logic level voltage includes a rectifier for converting the sensed a.c. voltage to a d.c. voltage which is supplied through a...
4499533 Power supply apparatus  
A power supply apparatus is structured such that the output of an alternating current voltage source (1) is connected to the input of a rectifying circuit (2), a series connection of a first...
4493016 Rectifier transformer  
A rectifier transformer circuit permitting six-phase double-wye operation with 120° conduction, (without the use of an interphase transformer), and providing any predetermined degree of phase...
4482856 Battery charger  
The invention comprises a bridged, transformerless charger which will permit the use of inexpensive low power diodes and a battery saver which may be used to permit excess energy to charge batteries.
4471423 Multi-voltage DC output with single reactor voltage control  
A circuit having voltage regulated DC-output is provided, which may have balanced DC voltages with respect to zero, and which has only a single voltage sensing and power regulating means. The power...
4454572 Flyback transformer with improved regulation  
A flyback transformer is described for use in television receivers, video monitors, and the like in which a video display device is scanned in accordance with a horizontal retrace frequency. The...
4449177 Discharging circuit for power source device with rectifier circuit  
A discharging circuit for a power source device with a rectifier circuit used in an power source for driving a motor in which when the alternating current power source is turned off and the load is...
4449176 Single phase regeneration with a polyphase rectification power circuit  
A polyphase rectifier power circuit with single phase regenerative capability provides motoring power from a polyphase supply and returns single phase regenerative power to the supply. One...
4447868 Regenerative rectifier circuit  
A three-phase regenerative rectifier provides power flow from ac to dc using a three-phase rectifier bridge. The reversal of the input ac voltage at the input frequency commutates current in the...
4445003 Improved connection arrangement for connecting series and shunt utilization circuit to a communications channel  
A simplified combination of privacy circuit (U1) and holding circuit (U2) for use on a telephone subscriber loop (11). The circuit arrangement includes a diode array (31--34) within a conventional...
4441150 High-voltage rectifier unit  
A high voltage rectifier unit comprises a vessel filled with an electrically insulating fluid and accommodating a transformer having a sectionalized secondary winding, each section 7 of which is...
4437148 Peak voltage clamped power supply  
The cost and energy efficiency of a power supply are optimized in a semi-regulated circuit wherein regulation occurs only under a high voltage, low current condition when peak output voltage would...
4432034 Bridge rectifier for selectively providing a full-wave or a half-wave rectified voltage  
An automatic power reduction circuit having a single silicon controlled rectifier in one leg of a bridge rectifier which is gated off when a capacitor reaches a predetermined voltage level so as to...
4430604 Rectifier switch for electric lawn mowers  
A switch is disclosed which includes both a switching assembly and a bridge rectifier, the switch assembly including contacts for connecting a DC motor such as the motor of an electric lawn mower,...
4429358 Flyback transformer  
A flyback transformer comprising a primary winding wound onto a core, secondary windings wound in magnetic coupling with the primary windings, and diodes connected to the secondary windings...
4417198 Average responding RMS indicating type transducer  
Transducers of the average responding RMS indicating type are disclosed that are particularly useful for monitoring currents and voltages in a power distribution network. The transducer includes...
4412278 Ac-to-dc converter using polarized input isolation capacitors  
Current-return diodes around input capacitors permits the use of polarized isolation capacitors in a.c.-to-d.c. power supplies. By providing input diodes, the use of more efficient polarized (d.c.)...
4408269 Balanced power supply with polarized capacitors  
A balanced, constant current power supply having two rectifying bridges coupled in parallel is energized by an AC source for generating a plurality of DC output voltages. The parallel arrangement...
4406978 Horizontal deflection output transformer for a television receiver  
In a horizontal deflection circuit output transformer for a television receiver, which transformer includes a primary coil, a secondary coil inductively coupled to the primary coil, and a rectifier...
4401940 Voltage equalizer bridge  
A diode equalizing bridge wherein one pair of opposed diodes are forward-biased and a second pair of opposed diodes are reverse-biased so that the two capacitors at the opposed load terminals are...
4393441 High voltage power supply  
A modified double Greinacher high voltage power supply wherein the side-string capacitances thereof have an inductance associated in series therewith, the inductance/capacitance circuits being...
4369490 Low-ripple power rectifier system  
To provide a power rectifier for connection to an a-c power network which has low ripple at the d-c output, and low harmonic content at the a-c side, particularly for feeding a d-c - a-c inverter...
RE31119 Fly-back transformer with a low ringing ratio  
In a fly-back transformer, the tertiary winding for obtaining the secondary B power source is wound in a position where the coupling with the primary winding is weak and where it interlinks the...
4360865 Broad band microwave detector  
An improved broad band microwave detector of the type including a detector diode, a by-pass capacitor, and a resistive termination wherein fabrication using coplanar transmission line techniques...
4356541 Rectifier  
A rectifier in which a semiconductor active element, which is a rectifying element, and a diode are connected in parallel in the same direction so that the degradation in rectifying efficiency due...
4344126 Low ripple D.C. power supply  
A high voltage power supply used to transfer three-phase a.c. energy to d.c. at full rated power over a large range of output voltages. The electric and magnetic circuits are arranged according to...
4340931 Power supply system  
A power factor improving system for a power supply system, comprising an AC power supply, a rectifier circuit connected to the AC power supply, a smoothing circuit for smoothing the output current...
4330818 Variable voltage direct current power supply and motor speed control  
A continuously variable voltage direct current power supply having first and second output terminals is provided using a variable transformer with a core of magnetically permeable material...
Matches 251 - 300 out of 446 < 1 2 3 4 5 6 7 8 9 >