Van Casteren
Dave Theodorus Everardus Henricus Van Casteren, Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20160099094 | VIBRATION ISOLATOR WITH DISPLACEMENT STRUCTURE - A vibration isolator is provided comprising a base structure, a load structure, a displacement structure and at least one vertical air gap formed by opposing and substantially parallel walls of the base structure and the load structure. The opposing walls being at least partly covered by respective arrays of permanent magnets, neighboring magnets in the arrays having alternating magnetization directions, an arrangement of the permanent magnets in the arrays being such that a gravitational force on the load structure is substantially compensated by a net magnetic force of the base structure on the load structure. The displacement structure relatively displaces arrays of permanent magnets of the opposing walls with respect to each along the air gap for adjusting a load capacity of the vibration isolator. | 04-07-2016 |
Dolf Van Casteren, Kk Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20130301307 | RESONANT POWER CONVERTER - A resonant power converter includes a resonance tank formed by a capacitance component and an inductance component, at least two switches connected to the resonance tank and a voltages source in a bridge configuration, a number of snubber capacitors connected in parallel to each of the switches, a controller configured to control ON and OFF timings of the at least two switches so as to excite the resonance tank, and a voltage sensor configured to sense a voltage drop across at least one of the switches. The controller is configured to switch the at least one of the switches to the ON state when the absolute value of the sensed voltage drop reaches a minimum. | 11-14-2013 |
20130314038 | BATTERY CHARGER FOR ELECTRIC VEHICLES - A battery charger for electric vehicles includes at least three identical current controlled AC-DC converter modules having reverse current protected outputs connected in parallel to a charge terminal of the battery. | 11-28-2013 |
Dolf Van Casteren, Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20160029451 | LED Driver Circuit - An LED driver circuit includes at least one string ( | 01-28-2016 |
20160072551 | POWER LINE COMMUNICATION SYSTEM - A power supply circuit includes a number N, N≧2, of parallel connected, cyclically switched electronic converters having outputs connected to a common output terminal; and a controller providing switching pulse signals switching the converters with a switching frequency that is the same for all converters; load circuits connected to the output terminal; a PLC transmitter modulating an output current from the output terminal; and a PLC receiver in each load circuit, the controller switching the converters with interleaved switching pulse signals; the PLC transmitter modulating the output current by switching the controller between at least two modes of operation that differ in phase relations and/or pulse shapes of the switching pulse signals, changing a ripple frequency spectrum of the output current such that a suppression amount of a predetermined frequency component is changed depending upon the mode of operation; and the PLC receiver detects the predetermined frequency component. | 03-10-2016 |
Dolf Henricus Jozef Van Casteren, Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20090146580 | HIGH INTENSITY DISCHARGE LAMP DRIVER WITH VOLTAGE FEEDBACK CONTROLLER - Current arrangement for operating a high intensity discharge lamp or a ultra high pressure discharge lamp, comprising a DC-to-DC converter, a control circuit for controlling the output value of the DC-to-DC converter, and a commutator. The control circuit comprises two control loops, one of which controlling an absolute average value of the lamp current, the other of which controlling and minimizing small variations of the lamp current around a reference value. An adaptive control of the first and second loop controllers can be used to adjust the controllers to changing system dynamics. | 06-11-2009 |
20100033098 | METHOD AND DEVICE FOR DRIVING A GAS DISCHARGE LAMP | 02-11-2010 |
20100295477 | METHOD FOR OPERATING A GAS DISCHARGE LAMP AND A GAS DISCHARGE LAMP DRIVER SYSTEM - In a method and circuit for operating a gas discharge lamp, the physical processes occurring in the gas discharge lamp are determined in order to control the behavior, and thus the light output, of the gas discharge lamp. Thereto, the method comprises the steps of, and the circuit comprises means for, providing an operating current to the gas discharge lamp and determining an operating parameter of the gas discharge lamp. Based on the determined operating parameter a value of a physical lamp parameter of the gas discharge lamp is determined. Using the determined value of the physical lamp parameter and a corresponding mathematical model of a physical process occurring in the gas discharge lamp an operating state of the gas discharge lamp is estimated. Using the model, which is based on the physical principles of the processes occurring in the gas discharge lamp, it is possible to determine the physical state of the gas discharge lamp. Consequently the operating current supplied to the gas discharge lamp may be controlled based on the determined operating state of the gas discharge lamp. | 11-25-2010 |
20100315015 | LAMP DRIVER FOR OPERATING A GAS DISCHARGE LAMP - A lamp driver circuit for operating a gas discharge lamp (La) is proposed, which comprises a switched mode power cc supply circuit (SMPS) and a first and a second output terminal (OT | 12-16-2010 |
Dolf H.j. Van Casteren, Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20110140625 | METHOD AND SYSTEM FOR OPERATING A HIGH INTENSITY DISCHARGE LAMP - The present invention provides a lighting system | 06-16-2011 |