Nutcase Kook wrote:

Where self heating of current through the metal of a bimetal strip to a
heater or some other faily current hungry device, switches in and out
some contacts and so gives some sort of an indirect regulator for the
load.

** Electric stoves use "simmerstats" where the bi-metal device is indirectly heated and cycles on and off to control the average power.

Electric room heaters have "thermostats", that sense room temperature and control the load in relation to it and the setting.


They were still to be seen in the dashboards of cars in the 1980s
and just termed regulators in the car repair manuals.

** Cars do not have electric heaters, but use hot water from the engine and a thermostatic valve plus fan to warm the interior.


..... Phil