Matches 1 - 19 out of 19


Match Document Document Title
7817453 Thermal foldback for linear fluorescent lamp ballasts  
A ballast circuit that facilitates providing thermal protection for a fluorescent lamp includes a coupling transformer that couples an inverter circuit to a control circuit. First and second...
7760527 Device and method for controlling an electric power converter  
The control device of an electric power converter comprises a control circuit controlling turn-on of power semi-conductor arms. The control circuit comprises a module for determining possible...
7254046 DC-DC converter  
In a DC to DC converter, first and second primary windings are magnetically coupled to a first secondary winding. Third and fourth primary windings are magnetically coupled to a second secondary...
7236378 Signal distribution to a plurality of circuit units  
A device for distributing a signal, in particular a clock signal or a command/address signal from a signal source to a plurality of circuit units, includes a transformer. The transformer has a...
6741485 Interconnection system for transmitting power between electrical systems  
An electrical interconnection system (100) comprises a variable frequency rotary transformer (102) and a control system (104). The control system (104) adjusts an angular position of the rotary...
6198238 High phase order cycloconverting generator and drive means  
An electrical generator, consisting of a high phase order generator and a high phase order cycloconverter. Output from said cycloconverter may be high phase order, three phase, single phase, or...
4573004 Variable electrical energy stabilizer  
A variable electrical energy stabilizer is supplied with a source having a voltage magnitude that varies to maintain a constant ratio with the pulsation frequency of the source. The variable supply...
4155114 Treble frequency converter  
A treble frequency converter comprising a stator and a synchronously rotating rotor. The stator is provided with a primary winding connectable to a polyphase alternating current source and a...
4077001 Electromagnetic convertor with stationary variable-reluctance members  
A dc/dc converter comprising a permanent magnet having spaced-apart poles and a permanent magnetic field extending between the poles of the magnet. A variable-reluctance core is disposed in the...
3771044 BROAD BAND FREQUENCY DOUBLER AND LIMITER UTILIZING MAGNETO-RESISTIVE EFFECT IN A ROTATING MAGNETIC FIELD  
Apparatus for frequency doubling and limiting over a broad band of frequencies by using a magneto-resistive effect in a magnetic film. The apparatus includes a thin plate of magneto-resistive,...
3541427 DIRECT FREQUENCY CHANGER ARRANGEMENT  
3309604 Magnetic core frequency multiplier and method of constructing the same  
3274481 Frequency multiplier circuit  
3262048 Frequency multiplier circuit including a sequential pulsing circuit  
3229192 Static frequency multiplier  
3223917 Magnetic frequency doubler with means for producing a unidirectional magnetic flux in said doubler  
3204020 Apparatus for generating electrical oscillations  
2883604 Magnetic frequency changer  
2794164 Magnetic device  
Matches 1 - 19 out of 19