Electronics in a vaping device?

[opampsmoker]

Please help show the electroncis in a vaping tool.
I believe there is some HF AC inductive coil which heats up the liquid and vaporises it?

[TheMG]

No it's nothing that fancy.

It's just a high current resistive heating element, and a MOSFET to switch it on or off (usually controlled by a small microcontroller, and a pressure sensor to detect when someone is sucking on the device). Some fancier models may have current monitoring and such, maybe even PWM power control. There would also be protection and charging circuitry for the lithium battery. That's about it.

[Mechatrommer]

Please help show the electroncis in a vaping tool.
I believe there is some HF AC inductive coil which heats up the liquid and vaporises it?

yes there is... its called heating coil, or atomizer. there is no stopping you from using it in AC application, success is not guaranteed though...

[opampsmoker]

Thanks, ~2 years ago i had an interview for a vaping device manufacturer........It had all the following on the job spec...

*********************______**************************

•   Highly competent in SMPS power supply design and familiar with most topologies (Buck, Boost, Flyback, LLC, Half-bridge, Full-bridge)
•   Highly experienced in analogue and digital design, DC-AC and DC-DC systems, EMC testing and current regulations.
•   Experience in analysing performance across process, voltage and temperature variations including environmental conditioning.
•   Knowledge of battery technologies, specifications and performance. Able to test and select batteries for use in THP prototypes and appropriate safety circuits.
•   Good understanding of best practice design for EMC and other safety & compliance requirements

•   Experience in inductive power systems; including wireless charging, control and heating.
•   Competent in modelling and simulating complex thermal and magnetic flux in FEA
•   Knowledge and experience of PCB design and chipset selection for BT and WiFi applications and products
•   Experience in writing and debugging software/firmware for similar hand-held electronic devices.

*********************______**************************

..And at the interview, they were asking me all about Diff amps, INAMPs, and common mode rejection ratio of opamps.

I am just wondering how this could be?...because a vaping device, as you kindly show, is just a resistive coil across a battery.

[Alex Eisenhut]

Every once in a while I see a dropped one on the ground. No way I'm picking that up though...

[Cerebus]

The better examples will have a buck or buck/boost SMPS between the battery and coil, to give consistent heating performance as the battery voltage changes with its state of charge. Some of the specialist examples allow you to set the coil voltage for more/less 'smoke' according to the user's preferences. From what I've seen of older models (say 3-5 years ago) the SMPS was microprocessor controlled. I wouldn't be surprised if recent examples used custom or semi-custom silicon.

[coppercone2]

because someone copy pasted a senior industrial designers job description, memorized some interview question answers and decided to hire people. BS

if you are doing all those things in a company its understaffed or they want way too much fluidity/role changing. a flyback, for a vape?

you mean like a tazer?

last time I saw so many different power converters in one system, it was a freaking computer monitor.
and even probobly Sony has a HV-guy. It's like 'yea boss, im not sure about this particular block on the power diagram' 'sure, we can have .... look at it'.

They want way too much from people. A company that already does vapes would know exactly what kind of PSU it uses and would not deviate from it, when you have too many PSU toplogies in a factory it gets crazy.

company design meeting : hmm.. that was some strong oil. *cough* You know I feel a little paranoid about all those chavs that hang around across the street from us sometimes. *cough* I know, why don't we hire a guy that can put a tazer gun.. inside of this vape... *cough*


I bet you that the job listing was copy pasted from a fucking television factory.

[MarkF]

[CChin254]

Not a lot; here is what is in a IQOS vape pen:

Photo Credit: Techinsights

[Mechatrommer]

The better examples will have a buck or buck/boost SMPS between the battery and coil, to give consistent heating performance as the battery voltage changes with its state of charge. Some of the specialist examples allow you to set the coil voltage for more/less 'smoke' according to the user's preferences. From what I've seen of older models (say 3-5 years ago) the SMPS was microprocessor controlled. I wouldn't be surprised if recent examples used custom or semi-custom silicon.

my alien smok attached (with mcu and lcd) it has constant power and vape mode option (soft, hard, kickass jk) my brother has a bigger vape will fullcolor 2-3" LCD fwiw...

..And at the interview, they were asking me all about Diff amps, INAMPs, and common mode rejection ratio of opamps.
I am just wondering how this could be?...because a vaping device, as you kindly show, is just a resistive coil across a battery.

i guess because when the vaping project is over, the company will not be left with some clueless engineer when differential probe project begins... and more advance vaping has current sense that require diff ins-amp i guess...

[CChin254]

Thanks, ~2 years ago i had an interview for a vaping device manufacturer........It had all the following on the job spec...

*********************______**************************

•   Highly competent in SMPS power supply design and familiar with most topologies (Buck, Boost, Flyback, LLC, Half-bridge, Full-bridge)
•   Highly experienced in analogue and digital design, DC-AC and DC-DC systems, EMC testing and current regulations.
•   Experience in analysing performance across process, voltage and temperature variations including environmental conditioning.
•   Knowledge of battery technologies, specifications and performance. Able to test and select batteries for use in THP prototypes and appropriate safety circuits.
•   Good understanding of best practice design for EMC and other safety & compliance requirements

•   Experience in inductive power systems; including wireless charging, control and heating.
•   Competent in modelling and simulating complex thermal and magnetic flux in FEA
•   Knowledge and experience of PCB design and chipset selection for BT and WiFi applications and products
•   Experience in writing and debugging software/firmware for similar hand-held electronic devices.

*********************______**************************

..And at the interview, they were asking me all about Diff amps, INAMPs, and common mode rejection ratio of opamps.

I am just wondering how this could be?...because a vaping device, as you kindly show, is just a resistive coil across a battery.

A vape device contains op amps too.
IC Identification of the IQOS vape device:

Photo Credit: Techinsights

There is another op amp other than the one shown here in the vaping pen too

[andre_teprom]

I remember when my curiosity about how vaping devices work really kicked in. It started when my vape pen began to malfunction. Instead of just getting it fixed or replaced, I decided to open it up and see what was inside. What I found was fascinating: a battery connected to a heating element, and a simple mechanism for vaporizing the liquid.

[themadhippy]

Theirs nothing new,there bigger brother has been used for donkeys years in discos ,theatres  and anywhere else a bit of haze/smoke is needed and  cracked oil isn't acceptable.

[coppercone2]

i just almost smoked a 100$ op amp and the op name is making me upset

[mspec]

Yeah, I get what you're asking about the internals of a vape. I'm not a tech wizard, but I've tinkered with a few vapes over the years. Basically, inside these gadgets, you've got a coil that heats up when you hit the power. The battery sends juice to the coil, and it gets hot, turning the liquid into vapour. It's a pretty simple setup. No fancy high-frequency AC stuff, just straightforward DC from the battery.

I remember when I first got curious about what's inside a vape. I had this Esco Bar Pastel Cartel, which I picked up because I heard good things about its flavours. Popping it open, I saw this simple coil and wick system. It's kind of cool how such a basic setup can turn liquid into vapour.