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
THE TAMING POINTS
A wear glasses only while working or reading. And the rest of the time they are buried, usually in the breast pocket. Just have to bend down like glasses are on the floor. Attach to the...
“HUT” OF YOUR GARDEN
Mini-house, which we'll tell you now, perfectly fits on any garden plot. If necessary, this can be a key or a temporary shelter for you and your family (if you build another big house)....
