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| Number | Title | Issue Date |
| 7394213 | Multi-lamp driver A multi-lamp driver t disclosed, comprising a power driver coupled to a plurality of lamps to supply power thereto, a feedback circuit coupled to at least one of the lamps to generate a feedback signal, a control circuit coupled between the feedback circuit and the ... | 07/01/2008 |
| 7355300 | Solid state turbine engine ignition exciter having elevated temperature operational capability A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor swit... | 04/08/2008 |
| 7336039 | Driving device for discharge lamps A driving device for driving discharge lamps (14) includes a first pulse circuit (11), a second pulse circuit (13), and a primary driving circuit (12). The first pulse circuit includes an input end, a first output end (1), and a se... | 02/26/2008 |
| 7319296 | Device for driving lamps A driving device for driving a plurality of lamps each including a first terminal and a second terminal, includes a power stage circuit (202), a transformer circuit (204) electrically connectable to the power stage circuit, and a current balancing circ... | 01/15/2008 |
| 7309962 | Protection control circuit for discharge lamps A protection control circuit for discharge lamps aims to control protection signals input to a load at a rear end of a high voltage output zone that are generated during abnormal conditions. The high voltage output zone has a control unit and a driving unit, and a s... | 12/18/2007 |
| 7285921 | Electric current balancing device An electric current balancing device includes an inverting circuit having a driving unit and one or more transformers coupled together for outputting an electric current to a load device, a detecting circuit coupled to the inverting circuit for receiving and detecti... | 10/23/2007 |
| 7230390 | Cold cathode fluorescent lamp assembly A cold cathode fluorescent lamp (CCFL) assembly includes a pair of CCFLs, and an inverter-type drive circuit. The drive circuit includes a first transformer having a primary winding adapted to be coupled to a power supply module, and a secondary winding with a pair ... | 06/12/2007 |
| 7221103 | Circuit for operating high-pressure discharge lamps A circuit for operating high-pressure discharge lamps, wherein a voltage transformer for power supply to a loading circuit includes a connection for the high-pressure discharge lamp (La) and for the secondary winding (L1b) of an ignition transformer (T... | 05/22/2007 |
| 7173379 | Incremental distributed driver An incremental distributed driver divides power delivered to multiple lamps into two power delivery stages. The first power delivery stage operates in voltage-mode to provide a partial operating voltage to the lamps. The second power delivery stage operates in curre... | 02/06/2007 |
| 7081717 | Discharge lamp lighting apparatus for lighting multiple discharge lamps A discharge lamp lighting apparatus for lighting a plurality of discharge lamps comprises: a control circuit adapted to output driving signals; a plurality of step-up transformers; and a plurality of bridge circuits, each of which is connected to a DC power supply, ... | 07/25/2006 |
| 6478441 | Hand held light apparatus A hand held light apparatus is disclosed. The apparatus has a handle portion, a central portion, and a cap portion for mounting a lamp. An electric circuit, preferably located in the central portion, connects the lamp with a power source, preferably batte... | 11/12/2002 |
| 6455997 | Deflection yoke having magnets on the top and bottom of the flange portion of the holder Deflection yoke for a cathode ray tube including horizontal and vertical deflection coils for deflection of electron beams emitted from an electron gun in horizontal and vertical directions, respectively, a ferrite core disposed to surround the vertical d... | 09/24/2002 |
| 4478201 | Enhanced spark energy distributorless ignition system (A) A distributorless ignition system of an internal combustion engine has a supplementary spark energy module to increase spark energy. Two ignition coils each have secondary coils with split secondary center taps. Each of the primary windings is coupled to ... | 10/23/1984 |
| 4462380 | Enhanced spark energy distributorless ignition system A distributorless ignition system of an internal combustion engine has a supplementary spark energy module to increase spark energy. Two ignition coils each have secondary coils with split secondary center taps. Each of the primary windings is coupled to ... | 07/31/1984 |
| 4123689 | Transient intermodulation ignition system A high energy ignition system makes use of induced transient voltages in an ignition transformer to intermodulate a plural number of such transients and thereby provide extremely high voltages to fire an igniter. The transformer output is connected in con... | 10/31/1978 |
