Flashlight, camera and electronic device

A flashlight, comprising:

• a control module;
• a first drive module comprising a first drive chip connected to the control module;
• a first boost module connected to the first drive chip;
• a voltage signal unit comprising a capacitor and connected to the first boost module;
• and
• a tube body connected to the voltage signal unit,
• wherein the control module is for outputting a control signal, the first drive chip is for receiving the control signal and outputting a first drive signal according to the control signal, the first boost module is for receiving the first drive signal and outputting a first voltage signal according to the first drive signal, the voltage signal unit is for receiving the first voltage signal and outputting the first voltage signal to the tube body for charging, and the first drive chip is further for detecting a current feedback signal of the first boost module, and for outputting an adjusting signal according to the current feedback signal to change the current feedback signal.