1
Hubert C Raets: Circuit for switching current in an inductive load. U S Philips Corporation, Robert T Mayer, Bernard Franzblau, September 22, 1987: US04695770 (11 worldwide citation)

A circuit for switching a current in an inductive load comprising at least one transistor (1) which switches through its collector-emitter path the current in the load (7). The base is coupled to the emitter through a voltage-stabilizing element (5) for stabilizing the voltage supplied to the base. ...


2
Manfred Albach, Hubert C Raets: Battery operated power supply with low voltage start circuit. U S Philips Corporation, Bernard Franzblau, October 9, 1990: US04962349 (11 worldwide citation)

A circuit arrangement for feeding a load (3) from a low voltage energy source (1) via a direct-voltage conversion circuit (2). The direct-voltage conversion circuit periodically takes energy from the energy source by means of a main switching element (10) and supplies this energy as an increased sup ...


3
Hubert C Raets: Circuit arrangement for switching a current in an inductive load. U S Philips Corporation, Robert T Mayer, Bernard Franzblau, February 10, 1987: US04642750 (4 worldwide citation)

A circuit arrangement for switching a current through an inductive load includes at least one semiconductor switch which periodically switches the current through the load at a switching frequency. The main current path of the semiconductor switch is switched alternately to the conductive and to the ...


4
Hubert C Raets: Resonant circuit arrangement for switching the current in an inductive load. U S Philips Corporation, Robert T Mayer, Bernard Franzblau, October 13, 1987: US04700083 (3 worldwide citation)

A circuit for switching current in an inductive load comprising at least one semiconductor switch which periodically switches the current through the load by means of its main current path which is switched alternately to the conductive and to the non-conductive state. A voltage-limiting element for ...


5
Manfred Albach, Armin F Wegener, Hubert C Raets: Load current interference reducing apparatus. U S Philips Corporation, Bernard Franzblau, April 5, 1988: US04736152

A circuit arrangement for reducing an interference current produced by a load (2). The frequency of the interference current is considerably higher than the frequency of a supply voltage source (1) which is coupled to the load. In order to reduce the interference current, a compensation circuit is p ...



Click the thumbnails below to visualize the patent trend.