I've never seen one of these devices before, and I've not seen some of this candy before too. It's the perfect combination.
Looking at the circuitry of the device, it has a very short shunt used to monitor current, and that is coupled to the control circuitry via a capacitor so that sudden current changes are coupled to the sense circuitry. The power supply does use that big zener to cap the voltage and it's clearly been running quite hot. The capacitive dropper actually uses a 330nF capacitor, so the zener will have been dissipating quite a lot of heat, which is the exact reason the timeswitch circuitry I mentioned uses a common large resistor to do the task. The thermal fuse only protects the NTC thermistor. As far as I can see this device uses a fairly simple analogue arrangement to detect sudden surges of load current and switches the NTC thermistor in-line briefly to soften the surge.
With reference to the candy (sweets) in the UK we refer to potato fries as "chips".
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5 сен 2024