Systems and devices for smoke free release of pant resins for use with tobacco or cannabis, including utilizing a removable cartridge which may contain metal foil regions. The cartridge is placed removably into a guide wherein heating occurs in zones via conductive and / or inductive heating elements. Such heat being at a sufficient temperature to vaporize resins or oils on plant material such as hemp, tobacco and cannabis, for inhalation from the cartridge.

Disclosed herein are aspects of portable vaporizers and methods to control temperature and operation of same. A printed circuit board in signal communications with at least one temperature sensor controls the power flow to a resistance heater to select the temperature produced by heating elements in the furnace. A rechargeable battery power supply is mounted in a body to supply power the heating element via an application or via direct interface the user communicates with the control system.

Disclosed herein are methods and systems to vaporize plant material including utilizing a removable disposable cartridge into a case with a receiver. Multiple zones allow for efficient heating. The receiver is configured to support heating elements and transfers heat to a containment portion of the cartridge. Heat zones can direct heat to different areas of the containment portion at a sufficient temperature to vaporize resins or oils on plant material for inhalation via the cartridge.

A heating apparatus includes: first and second heaters, first and second switches, first and second ramp signal generation circuits, a signal processor circuit, first and second comparison circuits, and a switch control circuit. The first and second ramp signal generation circuits generate first and second ramp signals according to first and second output currents, respectively. The signal processor circuit senses a temperature to generate a temperature-related signal. The first and second comparison circuits compare the first and second ramp signals with the temperature-related signal, to generate a first PWM signal and a second PWM signal for controlling the first and second switches respectively, to determine the first and second output currents so that there is a predetermined ratio between average powers of the first heater and the second heater.

[Object] To provide a control device and control system that make it possible to suppress overheating of a heater element without providing the heater element with an overheat prevention device.

[Solution] Provided is the control device for controlling driving of the heater element that produces heat when electric power is supplied, the control device including: an electric power control circuit configured to control electric power to be supplied to the heater element; a breaker circuit configured to interrupt distribution of electric power to the heater element; and a processor configured to control operation of the electric power control circuit and operation of the breaker circuit. The processor determines whether malfunction is caused with regard to the driving of the heater element on the basis of a predetermined malfunction detection condition, and causes the breaker circuit to interrupt the distribution of the electric power in the case where it is determined that the malfunction is caused.

A system for heating a fluid and an electromagnetic acoustic transducer EMAT system is provided. Both systems have a drive circuit. The amount of heat and the amplitude (and acceleration) of the vibrations is respectively controllable by controlling an input to a terminal of a switch. The heating system comprises a porous graphite foam conductor which is exposed to an electromagnetic field generated by an oscillating circuit. When exposed, the foam conductor conducts induced electric current which heats the same and a fluid in contact with the conductor. The EMAT system comprises at least one magnet configured to generate a static magnetic field, an oscillating circuit and a working element. The working element, when exposed to the static magnetic field and the electromagnetic field produced by the oscillating circuit, vibrates against a load. The vibrations dry the load.

Disclosed herein are methods and systems to vaporize extract, plant material containing organic material and the like, including a removable carriage with a chamber having an annular wall with and an open side within the removable carriage. The chamber having at least one intake inlet fluidly connected with the chamber and at least one outlet configured to connect the chamber to an inhalation opening. The carriage fits into a base which includes a controller and power supply. The base provides at least two heating elements oriented to cover the open side of the chamber when the carriage is fully inserted, an insulator separating the two heating elements; and, two temperature sensors each one in thermal contact with a heating element and in signal communication with the controller.

The present invention relates to a method of controlling an electro-thermal heating system in a wind turbine blade, comprising measuring a supply voltage to the electro-thermal heating system, determining a duration of a variable time based enforced off period based on the measured supply voltage, and inserting the variable time based enforced off period between subsequent switching duty cycles that controls the electro-thermal heating system. The present invention also relates to a wind turbine that comprises one or more wind turbine blades wherein each wind turbine blade comprises an electro-thermal heating system and a processor adapted to perform the method.

A flexible heating device includes a pouch defined in-part by a flexible heating textile that defines a cavity. The size of the cavity defined by the pouch is adjustable to snugly receive objects, e.g., sex toys, of different sizes. In embodiments, the pouch supports closing structure to facilitate adjustment of the size of the cavity to accommodate different size objects. In embodiments, the flexible heating textile includes an adapter that receives power from a power source such as a battery or wall plug to heat the flexible heating textile.

A remotely operated control system for energizing vehicular seat heating and cooling system is shown and described. The novel control system uses a remote control originally intended to operate vehicle features other than seat heating and cooling. The remote control issues more than the necessary single control command within a predetermined time period. The control system preferentially recognizes that the extra signals are intended to operate the seat heating or cooling features. Responsively, power is connected to a selected seat heating or cooling feature. The novel control system is conveniently wired to local electrically energized original conductors of the vehicle electrical system to bring power to the seat heaters or coolers.