Atomizer Heat Controller Circuit

An atomizer is a little battery controlled heating product manufactured for heating a provided liquid until it vaporizes and runs away into the environment via the given nozzle of the atomizer device.
The liquid "juice" stuffed inside the atomizer might be a scent based chemical, a repellent liquid or any type of equivalent liquid that might need to have vaporization for a determined reason, to match the specific consumer.

For heating the fluid into a vaporizing degree, the atomizer implements a wire coil filament, as soon as this coil is switched with power supply across its terminals, it becomes hot as a result of available resistance to the battery current, and in the task vaporizes the chemical juice loaded over this coil.

Commonly, atomizers can be found in two variants, one is the low resistance (LR) form while the other high resistance (HR) form. The low resistance variation has the ability of applying more battery current and therefore create more heat and effective vaporization, while the HR and also the high resistance atomizers do the same but with a lot less temperature and vaporization rate, because of their reasonably increased coil resistance, and decreased current intake.

Even so there's no intermediate setting for these devices which could permit the individual to set a desired vaporization rate in the liquid juice, as could be chosen by somebody making use of the product.

The recommended concept of a PWM controller circuit may be appropriately employed to match the above demand wherein an individual can control the atomizer coil warmth as well as the vaporization point when necessary, and as per certain specs.

The figure above exhibits a fundamental atomizer PWM heat controller circuit applying just a few transistors as well as a individual mosfet. The mosfet may be replaced with a BJT in case the working voltage is beneath 6V.

The circuit is a simple transistorized astable multivibrator circuit, the changeable resistor VR1 establishes the PWM rate for the two sides of the astable.

The LED has an opposing indication for the PWM rates used over the gate of the mosfet. Richer brightness shows a narrower PWMs on the mosfet gate and thus reduce temperature around the coil, alternatively a dimming LED reveals a larger PWMs on the mosfet gate and thereby increased warmth on the attached filament coil.

Parts List

R1, R2 = 1K

R2, R3 = 10K

VR1 = 100K

C1, C2 = 2.2uF/16V

T1, T2 = BC547

Mosfet = IRF540 or some kind of mosfet that can handle above 10V/50amp drain to source parameters.