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Snap action switches and limit switches are a type of mechanical switch. When the switch is activated, or a particular pressure or force is exerted, the switch will move to a different position and stay in the new position until force or pressure is no longer being applied.

Snap action switches, or also known as micro switches, contain an actuator connected to a spring. When the actuator is pushed, the force acts on the spring and the spring collapses, causing the actuator to move to a different position. The abrupt movement of the actuator is the snap action.

Limit switches, on the other hand, have an operator instead of a spring. The operators have a hardened tip which is pressed against a contact when force is Applied. When the force is removed, the operator will return and the contact will regain its original position.

Snap action switches and limit switches are used in a variety of applications. They are most commonly used in automation, industrial machinery, and instrumentation. They are generally used in applications where the switch must be triggered quickly and accurately.

One common application is in the medical industry. Snap action switches and limit switches are used to monitor and control vital medical equipment such as ventilators and cardiac monitors. The switches can be programmed to activate when certain pressure levels are reached, allowing the medical staff to quickly identify changes in patient condition.

Another common application is in the aerospace industry. The switches can be used to indicate an increase or decrease in air pressure, which is a critical function in flight. They are also used to control the load limits on helicopters and airships.

Snap action switches and limit switches can also be found in many household appliances. Some of the common applications include controlling the flow of water in washing machines, controlling the temperature of irons, and controlling the opening and closing of oven doors.

In the automotive industry, snap action switches and limit switches are essential components in airbag systems. The switches detect when the car has experienced an impact, which triggers the airbag system to deploy. This is an essential safety feature in modern cars.

No matter what the application, snap action switches and limit switches play an important role in modern technology. They provide fast and reliable switching and monitoring in a variety of applications. Their ability to speed up processes, improve safety and accuracy, and reduce energy consumption make them invaluable tools in the modern industrial world.

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