| 摘要 |
A protection device and method for preventing the power source voltage of a microcontroller from dropping in an electronic cigarette. The protection device comprises a microcontroller (200), a power source module (100) and a field effect transistor (300), wherein the power source module (100) is used for providing a power source for the microcontroller (200). The protection device also comprises an energy storage circuit (400). The energy storage circuit (400) is connected between the microcontroller (200) and the power source module (100), and the energy storage circuit (400) is used for supplying power for the microcontroller (200) through the energy storage circuit (400) when an overcurrent or a short circuit occurs, so that the microcontroller (200) can keep a normal operation voltage within a certain time period; and closing an MOSFET to stop the current output after the microcontroller (200) determines that an overcurrent or a short circuit occurs. The protection device and method prevent the microcontroller (200) in the prior art from generating unstable uncontrollable phenomena. |
