The present application discloses a circuit for improving the efficiency of energy consumption, extending lamp life, and facilitating the starting and steady state flickerless operation of a discharge lamp normally utilizing a source of alternating current, such circuit including: (a) a full wave rectifier...http://www.google.ca/patents/US4260932?utm_source=gb-gplus-sharePatent US4260932 - Method and circuit for facilitating the starting and steady state flickerless operation of a discharge lamp