Current fed electronic ballast for striation control of gas discharge lamps

In a lamp lighting ballast (20) which generates a lamp lighting signal for a lamp, provided is a striation elimination circuit to increase the lumen output frequency for elimination of visual striations which may occur within the lamp. An even harmonic signal generator is configured to generate an even harmonic waveform, and an injection point (50) is configured to receive the even harmonic signal into the lamp lighting system. The injection point (50) is located at a location wherein the even harmonic signal alters the lamp lighting signal from a symmetric signal configuration to a high content even harmonic signal configuration prior to being received by the lamp.