The utility model relates to the technical field of
hair removal instruments, aims to solve the technical problem of how to accurately control the charging and discharging process of an
energy storage capacitor and stabilize the output
voltage of a booster circuit so as to improve the performance of equipment, and discloses an
intense pulsed light therapeutic instrument which comprises a main control module, a light emitting circuit, the
energy storage capacitor and the booster circuit, a driving module for driving the light emitting circuit is arranged between the main control module and the light emitting circuit, the light emitting circuit comprises a switching tube Q4, a
diode D3 and a
flash lamp tube, a source
electrode of the switching tube Q4 is grounded, a grid
electrode of the switching tube Q4 is used for inputting a driving
signal, a drain
electrode of the switching tube Q4 is connected with a
cathode of the
diode D3, an
anode of the
diode D3 is connected with one end of the
flash lamp tube, and the other end of the
flash lamp tube is connected with the main control module. The other end of the flash lamp tube is connected with the positive electrode of the
energy storage capacitor, and the positive electrode of the energy storage capacitor is further connected with a
voltage monitoring circuit which feeds back charging and discharging parameters to the main control module. And a
voltage monitoring circuit is configured, so that accurate control on the charging and discharging process of the energy storage capacitor is realized.