US Patent 10051889 Electronic cigarette

An electronic cigarette includes a control chip, the control chip includes: a driving module configured to output a current to drive the electronic cigarette to work; an open-circuit detecting module electrically connected to the driving module, and configured to sample and detect the current, and send out an open-circuit enable signal when a sampled current is less than a internal reference current; a short-circuit detecting module electrically connected to the driving module, and configured to sample and detect the current, and send out a short-circuit enable signal when the sampled current is greater than the internal reference current; and a control module electrically connected to the driving module, and configured to receive the open-circuit enable signal and the short-circuit enable signal, and send a shutdown signal to the driving module.