Lamp board circuit of xenon lamp

The utility model relates to a lamp board circuit, especially to a lamp board circuit of a xenon lamp. The lamp board circuit comprises a pulse trigger circuit, and a feedback circuit connected with the pulse trigger circuit. The feedback circuit is added on the pulse trigger circuit and used for monitoring the voltage across a xenon lamp circuit on the real time and feeding back the voltage data to the pulse trigger circuit, the output voltage in the voltage signal from the pulse trigger circuit is used for adjusting the output voltage in a control circuit, and the constant output of voltage is ensured, so that the voltage of the xenon lamp is always at the constant input state. The lamp board circuit has features of simple structure and high practicability.