A system includes a converter configured to electrically couple to a power source and to a heating element of a vaporizer atomizer. The converter can be further configured to receive a first voltage from the power source and provide a second voltage to the heating element. The converter can be a direct-current to direct-current converter. A power monitor configured to electrically couple to the heating element, measure a current through the heating element, measure a voltage over the heating element, calculate a power and/or resistance, and output a control signal to the converter. The converter can be configured to be controlled by the control signal to vary the second voltage to maintain a target power or a target temperature over the heating element. Related apparatus, systems, techniques and articles are also described.

The present invention provides a heater temperature control circuit including a heater and a control circuit that controls a temperature of the heater, wherein the control circuit includes a bridge circuit in which a first circuit and a second circuit are connected in parallel, and an operational amplifier connected to the bridge circuit, wherein in the first circuit, the heater and a resistor are connected in series, and a midpoint of the first circuit is connected to one input portion of the operational amplifier, and an output value V.sub.out from the second circuit is input to the other input portion of the operational amplifier, the output value V.sub.out being obtained by multiplying a division ratio of a target resistance value R.sub.h of the heater and a resistance value R.sub.1 of the resistor with a reference voltage V.sub.ref of the bridge circuit.

A heater control system includes a heater driver, a current sensor, a slope calculator, and a mode selector. The heater driver is configured to control current to a heater. The current sensor is configured to sense current supplied to the heater. The slope calculator is configured to calculate a slope of the current supplied to the heater. The mode selector is configured to adjust current supplied to the heater by the heated driver based on the slope of the current.

A battery unit includes a power supply; a connection configured to be connectable with a load for atomizing an aerosol source or heating a flavor source and a charger for charging the power supply; and a controller that performs a specific process at least selectively executable to at least temporarily disable the supply of electric power to the load from the power supply, if erroneously determining the load connected to the connection as the charger is identified.

According to an embodiment of the present disclosure, an aerosol generating apparatus having a feedback control function includes a heater configured to heat an aerosol generating substrate to generate an aerosol; a controller configured to generate a control signal for controlling power supplied to the heater; a switch configured to perform a switching operation based on the control signal to supply the power to the heater; and a comparison signal calculator configured to receive a signal by the switching operation to calculate a comparison target signal, wherein the controller is further configured to generate a cut-off signal for stopping the switching operation of the switch based on a comparison value calculated by comparing the comparison target signal with a reference signal exceeding a preset range.

The present disclosure relates to electronic cigarettes having vaporizer assembly with “U” shaped air path and methods of using the same. The electronic cigarette includes: mouthpiece assembly, electronic cigarette body, E-liquid storage tank having a negative air pressure cavity and a number of airflow channels forming “U” shaped air path, and the vaporizer assembly. The vaporizer assembly includes: one or more cylindrical E-liquid storage media, and one or more heating elements. The elements are electrically connected to an electrical power supply through negative air pressure activated switch. When a user sucks air from mouthpiece assembly, a negative air pressure is created in the negative air pressure cavity, the negative air pressure activated switch turns on the electrical power supply to the heating elements, and the heating elements vaporize the E-liquid stored in cylindrical E-liquid storage media to generate electronic cigarette vapor for the user through the “U” shaped air path.

A temperature controller for electronic smoking device includes a metal heating sheet for heating a cigarette and a controller for controlling temperature of the heating sheet by collecting a real-time resistance of the heating sheet. The power drive unit is electrically connected to a power source and the heating sheet respectively, the control unit is electrically connected to the power drive unit and the real-time resistance detection unit respectively, and the analog-to-digital conversion unit is configured to convert an analog signal output by the real-time resistance detection unit into a digital signal that is transmitted to the control unit. The real-time resistance detection unit is configured to detect a real-time resistance of the heating sheet, and the control unit is configured to adjust an output power of the power drive unit according to the real-time resistance of the heating sheet. The controller realizes precise temperature control and convenient operation.

An aerosol generating device includes a first heater for heating a liquid composition accommodated in a liquid storage of a vaporizer, a puff sensor detecting a pressure change within the aerosol generating device, and a controller. The aerosol generating device may determine a puff pattern including a plurality of sections, based on a signal received from the puff sensor. In addition, the aerosol generating device may control an operation of the first heater, based on states of the plurality of sections.

An automatically resettable smoking paraphernalia includes the following components: an outer upper shell, a smoking cup provided inside the outer upper shell, a pushing key, and a spring, etc., wherein the smoking cup, the spring, the outer upper shell can be detached and replaced as a whole, the smoking cup can stick out of the outer upper shell by a distance to extract and unload the cigarette, and then automatically reset. Besides, the smoking cup is hidden inside the upper outer shell, so as to prevent the exposed smoking cup with an excessively high temperature from burning users, meanwhile avoiding a risk of losing the smoking cup.

A heating oven for use with a heat-not-burn portable heating device for the delivery of vaporized natural consumables, and methods of operating the oven are disclosed. The oven heats a flower stick filled with natural consumables to vaporize volatile compounds for the inhalation and enjoyment of the user. The oven operates by both conduction and convection via knitted wire filters that have high surface area and thermal mass to enable rapid heat transfer and stabilization of temperatures. The oven operates according to one or more temperature profiles for the duration of a heating session.