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| Number | Title | Issue Date |
| 7187134 | Method of triggering at least one illuminating means and triggering circuit for practicing such method A system and method for illuminating a light source, particularly a vehicle light source. The light source receives a voltage signal causing the light source to be illuminated. A triggering circuit detects the voltage signal. If the voltage signal is at or below a p... | 03/06/2007 |
| 6847174 | Drive for a half-bridge inverter The selection of the dead time in the case of a half-bridge inverter influences the efficiency thereof. The optimal dead time, and thus the optimal switching-on time of a lower half-bridge transistor (T2) is accomplished according to the invention by virtue o... | 01/25/2005 |
| 6049176 | Ignition device for an internal combustion engine An ignition device for an internal combustion engine capable of suppressing not only a decrease in the discharge energy of the spark plug but also the LC resonance itself. When an igniter 13 is turned on by an ignition timing control unit 14 and a current... | 04/11/2000 |
| 5300864 | Programmable lighting control system A programmable lighting control system for decorative, artistic, and Christmas lighting applications, includes a plurality of outlet receptacles for connection thereto of series or parallel connected Christmas tree lighting strings or the like, a pluralit... | 04/05/1994 |
| 4625152 | Tricolor fluorescent lamp A tricolor fluorescent lamp operating on a DC power source is disclosed herein. The lamp comprises an outer envelop defining therein a sealed space in which an ionizable medium is filled at low pressure. Disposed within said outer envelop are three tubula... | 11/25/1986 |
| 4398126 | Protected low-pressure discharge lamp operating circuit A fluorescent lamp control circuit which provides power at high frequency, or example in the order of 35 kHz, includes a push-pull oscillator circuit having two transistors (T1, T2), an inductance element (L1, L1'), and a capacitor (C1, C1') to supply the ... | 08/09/1983 |
| 4298868 | Electronic display apparatus An apparatus is provided to produce an optical illusion of variable geometric patterns. The apparatus may be used as an electronic toy, display or kinetic art mural, as well as a demonstration aid in geometry, physics or physiology. An array of light emit... | 11/03/1981 |
| 4215277 | Sequencing light controller A controller for sequentially energizing a plurality of lights, such as commercial display lighting or Christmas tree light strings, includes a plurality of outlet receptacles into which the lights or light strings may be connected, a Triac for each recep... | 07/29/1980 |
| 3934249 | Border flashers An improved border lamp flasher device employing electronic circuitry by which lamps are switched on and off in such a way as to make it appear as if the lamps are circulating around the border of a sign, marquee or the like, or an attention getter advert... | 01/20/1976 |
