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US 6,204,609 B1Granted
Enhanced inverter for powering an EL lamp
AssigneeDurel Corporation
InventorRobert A. Kimball
Life of this patent
Estimating the term…
Abstract
A power supply for an EL lamp includes a boost circuit and four semiconductor switches connected as a bridge having an AC diagonal and a DC diagonal having one end grounded. The voltage boost circuit is coupled across the DC diagonal and an electroluminescent lamp is coupled across the AC diagonal of the bridge. The two semiconductor switches coupled to ground are SCRs.
Claims3
A power supply for an electroluminescent lamp, said power supply comprising:
- a voltage boost circuit;
- four semiconductor switches connected as a bridge having an AC diagonal and a DC diagonal, wherein said voltage boost circuit is coupled to said DC diagonal and said AC diagonal is adapted for connection to said electroluminescent lamp;
- wherein each semiconductor switch includes an SCR.
A power supply for an electroluminescent lamp, said power supply comprising:
- a voltage boost circuit;
- a first pair of series connected, semiconductor switches including a first high side switch and a first low side switch;
- a second pair of series connected, semiconductor switches including a second high side switch and a second low side switch;
- wherein said high side switches are coupled to said boost circuit, said low side switches are coupled to ground and wherein each low side switch includes an SCR.
1 more element
Dependencies are inferred from the claim text.