Electronic elimination of striations in linear lamps

摘要

The present invention provides a lighting system (20) powered by a system power source (22). The lighting system includes a ballast (26) in operative connection with the system power source (22) where the ballast (26) is designed to generate a lamp input signal. A lamp input line (30) is operatively connected to receive the lamp input signal. Further, a gas discharge lamp (32) is in operative connection to the lamp input line (30) configured to receive the lamp input signal. An amplitude modulation circuit (36) is then placed in operative connection to the lamp input line (30), where the amplitude modulation circuit (36) is configured to periodically modulate amplitudes of the lamp input signal prior to the lamp input signal being received by the gas discharge lamp (32). Operation of the amplitude modulation circuit (36) results in a periodic amplitude modulation of the lamp input signal and eliminating visual striations otherwise occurring in the lamp (32). <IMAGE>