| Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889) |
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| 04/27/2006 | WO2006042778A1 Reactance coil, in particular for operation in a frequency converter system, and frequency converter system |
| 04/27/2006 | DE19844132B4 Magnetkern für eine sättigbare Drossel, Schaltregler mit mehreren Ausgängen vom Typ mit magnetischer Verstärkung sowie Computer mit einem derartigen Schaltregler Magnetic core for a saturable reactor, switching regulators with multiple outputs of the type with magnetic reinforcement, and computers with such a switching regulator |
| 04/26/2006 | EP1649475A1 Method for monitoring insulating oil |
| 04/26/2006 | CN2775812Y Oil immersed transformer |
| 04/20/2006 | DE102004051129A1 Drossel, insbesondere zum Betrieb in einem Frequenzumrichtersystem, sowie Frequenzumrichtersystem Throttle, especially for operation in a frequency converter and inverter system |
| 04/19/2006 | EP1325394A4 Wide ratio autotransformer-type current ranging |
| 04/19/2006 | CN1252749C Magnet core with magnetic deflecting body and inductor therewith |
| 04/13/2006 | US20060076329 Transformer module for a welder |
| 04/11/2006 | US7026905 Magnetically controlled inductive device |
| 04/05/2006 | EP1562508A4 System for, and method of, heating a biological site in a patient s body |
| 04/04/2006 | US7023675 Power supply for measuring the line impedance of underground cable |
| 04/04/2006 | US7023673 Superconducting shielded core reactor with reduced AC losses |
| 03/29/2006 | CN2768166Y Change-over supporting canister assembly of on-load tap-changer |
| 03/29/2006 | CN1248246C Magnetic controlled current or voltage regulator and transformer |
| 03/29/2006 | CN1248005C Tap changer condition diagnosing |
| 03/29/2006 | CN1248004C Tap changer monitoring |
| 03/22/2006 | EP1638196A2 Device for feeding variable loads |
| 03/22/2006 | CN1750189A Decimal inductor having multiple step disc |
| 03/02/2006 | WO2006021597A1 Multi-voltage power transformer for a high-voltage electric power transmission network (politrafo) |
| 03/02/2006 | CA2574260A1 Multi-voltage power transformer for a high-voltage electric power transmission network (politrafo) |
| 02/22/2006 | CN1739227A Condition diagnosing |
| 02/16/2006 | US20060033484 Control method and device for a power-converting module that drives a light-emitting component |
| 02/15/2006 | CN1242432C Magnetic core with magnetic offset composite magnet and inductive element using said magnet core |
| 02/15/2006 | CN1242431C Magnetic core contaiing addrssive magnet with magnetic power with anti-oxidation metal coated on surface |
| 02/14/2006 | US6998573 Transformer module for a welder |
| 02/09/2006 | US20060028235 Preventive maintenance tapping and duty cycle monitor for voltage regulator |
| 02/08/2006 | EP1303800B1 Magnetic controlled current or voltage regulator and transformer |
| 02/07/2006 | US6995646 Transformer with voltage regulating means |
| 02/07/2006 | US6995643 Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil |
| 02/02/2006 | US20060023834 High voltage transformer for backlight power source |
| 02/01/2006 | EP0835548B1 Resonance tapped transformer |
| 02/01/2006 | CN2755756Y Electric operating mechanism of loaded tap switch |
| 02/01/2006 | CN2755752Y Unsaturated electric sensor of ultrasonic generator |
| 02/01/2006 | CN2755751Y Flange structure of bell loaded tap switch |
| 02/01/2006 | CN2755750Y Non-cxcitation tap switch of transformer |
| 01/25/2006 | EP1619698A2 On load tap changing transformer |
| 01/25/2006 | CN2754192Y Inductance-modulating voltage-varying choke |
| 01/25/2006 | CN1725983A System for, and method of, heating a biological site in a patient's body |
| 01/25/2006 | CN1238871C Key type on-load tap changer |
| 01/19/2006 | DE102004046926B3 Einrichtung zur Regelung der elektrischen Spannung Means for controlling the electrical voltage |
| 01/18/2006 | CN2752937Y Jackshaft of loaded tap changer shunting selector |
| 01/18/2006 | CN2752936Y Isolate switch moving-tapper device |
| 01/18/2006 | CN2752925Y Mining general AC voltage compensator |
| 01/18/2006 | CN1237701C System automatically influencing electric network and motor drive for said system |
| 01/18/2006 | CN1237553C Magnetic core contg. magnetic bias magnet and induction element with said magnetic core |
| 01/12/2006 | WO2006003111A1 Magnetic circuit device |
| 01/12/2006 | DE10148040B4 Regelbarer Induktionsformator mit elektronischer Steuerung Adjustable Induktionsformator with electronic control |
| 01/11/2006 | CN1719708A Method for detecting tap position of high-voltage tap changer by rotary coder |
| 01/04/2006 | CN2750436Y Ultrahigh capacity on-load tap-changing autotransformer |
| 01/04/2006 | CN1235242C Isolated voltage regulating transformer |
| 01/04/2006 | CN1235241C Starting and operation changeable power supply under large loading of electric machine |
| 12/28/2005 | EP1609553A1 Power source for high current welding |
| 12/28/2005 | CN1712170A Power source for high current welding |
| 12/21/2005 | CN1710677A High-speed low-harmonic controllable reactor |
| 12/15/2005 | WO2005119711A1 Variable inductive device |
| 12/08/2005 | US20050273091 System for, and method of, heating a biological site in a patient's body |
| 12/01/2005 | DE102004052316B3 Switching method for measuring switch times on an on-load step switch attaches a test circuit to electric switch elements inside a step switch with a separate source of voltage |
| 11/16/2005 | CN1227680C Contra variant transformer and discharge lamp firing circuit using the same contra variant transformer |
| 11/15/2005 | US6965291 Circuit component and transformer device with controllable impedance and with systems equipped with such devices |
| 11/10/2005 | US20050248324 Power supply for measuring the line impedance of underground cable |
| 11/09/2005 | CN2739776Y Fuel cell |
| 11/09/2005 | CN1695214A Transformer |
| 11/08/2005 | US6962435 Condition diagnosing |
| 11/02/2005 | CN1691222A Transformer for switching power supply |
| 11/02/2005 | CN1225752C Magnetic core having effective magnetic polarization and magnetic device using same |
| 10/27/2005 | US20050237143 Transformer for switching power supply |
| 10/12/2005 | CN2733547Y Base structure of on load tap changer |
| 10/12/2005 | CN2733546Y Cage type tapping switch without excitation |
| 10/11/2005 | US6954131 Electrical reactor assembly having center taps |
| 10/06/2005 | US20050218134 Output choke for D.C. welder and method of using same |
| 10/05/2005 | CN2731829Y Transformer having two-class voltage |
| 10/05/2005 | CN2731667Y Novel dynamo brush assembly for contact transformer |
| 10/05/2005 | CN2731666Y Magnetic valve type and saturation type regulatable reactor |
| 09/29/2005 | US20050212631 Electromechanical device for selecting coil voltage and locking the coil in place |
| 09/28/2005 | EP1579480A2 Active method and system of establishing electrical contact |
| 09/27/2005 | US6950005 Adjustable coilform for variable inductance |
| 09/21/2005 | CN2727918Y A single-phase controllable reactor |
| 09/15/2005 | US20050200440 Method for selecting coil voltage and locking the coil in place |
| 09/07/2005 | CN2724166Y Full range quick adjustable reactor |
| 09/07/2005 | CN1664409A Barrel wall type sheave mechanism for three dimensional vertical axes rotation transmission |
| 09/06/2005 | US6940380 Transformer/reactor |
| 09/01/2005 | US20050190585 Magnetically influenced current or voltage regulator and a magnetically influenced converter |
| 08/31/2005 | CN2722407Y Power converting inductive ballast |
| 08/31/2005 | CN2722404Y Non-excitation distributive switch |
| 08/31/2005 | CN2722403Y Non-excitation disributive switch |
| 08/31/2005 | CN2722402Y Non-excitation distributive switch with intermediate voltage regulation |
| 08/25/2005 | DE102004007134A1 Amplification method for magnetically controlled current amplification uses a coil in a hollow body to receive direct voltage current and manipulate electrons with its magnetic field |
| 08/24/2005 | CN2720602Y Excitation-free tap-changer of transformer |
| 08/23/2005 | US6933822 Magnetically influenced current or voltage regulator and a magnetically influenced converter |
| 08/18/2005 | WO2005076293A1 Power supply control methods and devices |
| 08/18/2005 | WO2005034152A3 System and method for connecting a removable coil to fixed coil terminals |
| 08/17/2005 | EP1562508A1 System for, and method of, heating a biological site in a patient s body |
| 08/16/2005 | US6930580 Output choke for D.C. welder and method of using same |
| 08/11/2005 | US20050174127 Circuit component and transformer device with controllable impedance and with systems equipped with such devices |
| 08/10/2005 | CN2716997Y Main shaft assembly for on load tap changer |
| 08/10/2005 | CN2716986Y Positive and negative regulating transmission means for non-excitation bar-type tapping switch |
| 08/03/2005 | EP1559120A1 Transformer |
| 07/21/2005 | US20050156701 Electrical reactor assembly having center taps |
| 07/20/2005 | CN1641809A Contactless regulating self-coupled transformer |
| 07/20/2005 | CN1641807A Fuel cell |