Patent ID: 6278382
Filing Date: 2001-08-21
Classification: B60Q,B64D,F21V,H05B

Abstract:
A recognition light comprising:first and second lamps;a light detector positioned to detect light emitted from at least one of the lamps;a monitor circuit connected to the light detector for providing a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria; anda control circuit connected to the monitor circuit and the first and second lamps for first activating the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit; andwherein the electrical control circuitry includes a voltage doubler for triggering the first and second lamps;wherein the voltage doubler comprises a series trigger transformer comprising a first trigger coil and a second trigger coil, andwherein the second trigger coil is serially connected to the cathode input of the lamps via respective flash capacitors.