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
INSTEAD OF A MICROPHONE — DYNAMIC HEAD
When there are dynamic microphone, you can substitute any small-sized dynamic head. Here's what proposes to make to the Yugoslav magazine "Radio Amater". Since the voltage developed by...
TWO FLOORS
"Storey" furniture is always attractive at least because it allows you to save space in the apartment. Not casually so popular, for example, a furniture wall wardrobes with mezzanine....
