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
FOR ANY RADIUS
Comfortable and high-performance tool — the jigsaw is much easier and straight and curved sawing of wooden workpieces. Simple Supplement thereto, proposed by the Hungarian magazine...
One potato, two potatoes
"Potatoes are often called the second bread. But this bread is not easy to come by. Especially without using prohibitively expensive tillers and mini-tractors, relying only on a shovel and...
