Paul J Kahanic

US Patent:

20030006717, Jan 9, 2003

Filed:

Mar 22, 2001

Appl. No.:

09/816050

Inventors:

Philip Roller - Ashville NY, US
Timothy DiPenti - Russell PA, US
Paul Kahanic - Ashville NY, US

International Classification:

H05B037/02

US Classification:

315/219000, 315/291000

Abstract:

This invention relates to circuits for operation over a range of voltages, more particularly for a vehicle lamp circuit that provides lighting over a range of voltages. The invention provides a circuit that allows the operation of an LED array lamp over a range of voltage. This is achieved by making use of three-terminal adjustable regulators. One of the three-terminal regulators is configured as a voltage regulator. It regulates the voltage by a connection to a voltage divider. A second three-terminal regulator is connected to the voltage regulator. The second regulator is configured to be a current regulator with the current set by one resistor. This circuit can be further modified with additional adjustable three-terminal regulators to increase in functionality.