
This device is not very complicated and consists of the heating element, the mercury column and the solenoid. When the current is switched on starts to operate the heater — closed working contacts of the relay. When it starts to heat up the mercury, and the column rises to the level of the contact turns on the electromagnet. It attracts the contact 1, and the heater is switched off. With the decrease of temperature the mercury goes down, severing contacts, the electromagnet is deactivated. The result is again connected to the terminals 1 and 2, and the heater turns on again.
Recommend to read
JUST VERLIN TUBE
To make a hole in a wooden part during the repair of furniture when the hand met the pen drill, using a metal tube from the bottle and drill. It is necessary to impose on the long M4...
If you have slats, you don’t need boards
For many years Modelist-Konstruktor has been introducing its readers to various furniture designs intended for do-it-yourself construction. Unfortunately, as reader mail shows, not all...