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Follow on Google News | All About Optional AutomationWhen you say optional automation the first thing that comes to mind is a Timer. A timer is a kind of clock that can control a process or an event.
By: CheapHotTubs Xaviera Arata Editor of the Cheap Hot Tubs website -- http://www.CheapHotTubs.me -- pointed out; “…Mechanical timers use mechanisms applied in clocks like escapement and springs in order to pick up the pace when it comes to the speed. If it is inaccurate, these mechanisms are said to be cheap and it is better to use a timer that is able to resist this. An example is the mechanical egg timer…” Added Xaviera Arata The accurate mechanism of a timer resembles those small alarm clocks. The advantage of these timers is hat they don't need a battery or electricity. They can also be stored for a long time. The most common application of this kind of automation control are bombs and explosives. The Two types of Electromechanical Timers 1. Thermal type It has a metal finger that comes with various rates of expansion. The most common are the bronze and steel. The process involves the electric current flowing through and heating it. A side expands making the other side shorter. There is contact on the other end and it moves away from the switch contact. The most common application are the flashers that turn the signals in cars. It is also applied in Christmas lights. 2. Cam Timer This kind uses a small motor that is synchronous and turns the cam through the switch contacts. This contraption, referred to as the AC motor, is always turned on and by alternating the current, it becomes an accurate rate. Power companies regulate these kinds of timers. This slow the motor to the desired speed and turns the cam on. The most popular application are those in dishwashers, driers and washing machines. This kind of timer comes with a friction clutch between the cam and the gear train. Therefore, the cam can be reset at any time. Electromechanical timers are really popular because they are less expensive when compared to the mechanical switch conducts. They are also cheaper than those devices that have to be controlled by heaters, motors and power lights. Before, mechanical timers were used in electric relays in order to guild controllers powered through electro-mechanical contraptions. These electromechanical timers reached a state that were very extensive and eventually were applied in weapons systems and aerospace. “…Thanks to these electromechanical timers that can be controlled and programmed, launching of sequence events, rockets and missiles were made possible…” Added Xaviera Arata Further information, resources and reviews of the best but reasonable priced hot tubs by clicking: http://www.CheapHotTubs.me End
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