/diy/ - Do It Yourself

I was repairing a desktop "herbal vaporizer" (I did get it working again), and I decided to have a go at reverse engineering it.

The board itself is tiny. The only control on the front of the device is the switch/ 500k potentiometer.

I'm just wondering if this schematic even makes sense?

I haven't messed with triacs very much (although that was actually the component I replaced on the board to repair it, just had to solder on a new one).

I'm guessing that the heat dissipated by the ceramic heating element is a function of the AC voltage applied to it, so I was thinking that this might be some kind of rudimentary phase angle control circuit when I saw the triac, but it doesn't really look like that...

I'll post the PCB itself next.