Patent ID: 7271551

Claim:
A driver protection circuit for a push-pull type discharge lamp, comprising: a discharge lamp having two input electrodes; a driver circuit having two transformer units and two driver units, wherein said two transformer units are respectively connected to said two input electrodes of said discharge lamp and provide an opposite-phase push-pull type driving power for said discharge lamp; the front ends of said transformer units are respectively connected to said driver units; said driver units are parallel connected to a power source; the combination of said driver unit, said transformer unit, and said input electrode is defined to be a high voltage output section; and a protection mechanism having two protection units, wherein said protection units are respectively assigned to said high voltage output sections; said protection unit can receive an abnormal signal of the corresponding said high voltage output section and synchronically transmits said abnormal signal to said driver units and makes said driver circuit simultaneously stop or pause outputting power to said two input electrodes of said discharge lamp so that none power will continue to drive said discharge lamp.