Whats the simplest electr(on)ic(al) method for heating a coil or similar element to a specific temperature?
Generating heat is easy; dictating and regulating a specific temperature is the hard part.
For example, a modern kettle might have a wax thermostat that opens/breaks the circuit once it reaches 100°C, but it doesn't maintain, hold or regulate that temperature. The water doesn't continue to boil indefinitely. It simply reaches boiling point and then the heat is removed. I'd like to reach the desired temperature, but not exceed it, and then just stay that temperature.
Some consumer products with this kind of capability:
Inductive cooktops, laboratory hotplates, heating mantles, crucibles, furnaces, climate control devices, etc.