Temperature self-adaptive adjustment power tube

Provided is a temperature self-adaptive adjustment power tube which comprises a signal input end, a power tube and a gate electrode thereof. The temperature self-adaptive adjustment power tube is characterized by further comprising a gate electrode control circuit which is composed of a pull-down resistor, a voltage dropping resistor, a temperature induction device, a first signal input tube and a second signal input tube. The first signal input tube is connected between a power supply and the pull-down resistor which is grounded. The common end of the pull-down resistor and the first signal input tube is connected with the gate electrode of the power tube. The signal input end is connected with the control end of the second signal input tube. The voltage dropping resistor and the temperature induction device are connected in series between the drain electrode of the second signal input tube and the ground. The second signal input tube is a PMOS, the source electrode of the second signal input tube is connected with the power supply and the drain electrode is connected with the control end of the first signal input tube. Output voltage of the temperature induction device is a negative temperature coefficient. Adjustment of the heat value of the power tube can be realized only via additional arrangement of a small amount of devices so that the power tube is enabled to work continuously and uninterruptedly and unnecessary shutdown loss can be avoided.