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Pushbutton switches are a type of switch utilized to control electricity. They can provide a variety of switching functions and can be used in a number of applications. This article will discuss the application fields and working principles of pushbutton switches.

Types of Pushbutton Switches

Pushbutton switches can be divided into three main types: momentary, maintained, and keyed switches. Momentary switches have a brief operation, and will return to their original state when the button is released. Maintained switches, on the other hand, remain in their “on” position until manually reset. Lastly, keyed switches can be used in combination with a key, and will remain off until the correct key is inserted.

Application Fields of Pushbutton Switches

Pushbutton switches are used in a wide variety of applications. They are commonly used as a simple switch for powering on and off electrical circuits, as well as for making adjustments in speed, direction, and other aspects. Additionally, pushbutton switches are used in control panels for industrial applications, such as turning on equipment and controlling the flow of fluids. Pushbutton switches can also be used for indicating alarms, switches for controlling temperature, switches for controlling pressure, and for signaling the opening and closing of a circuit.

Working Principles of Pushbutton Switches

When a pushbutton switch is operated, an internal contact system is activated or moved by the operation of the switch. Depending on the type of switch, the operation of the switch can be irreversible or reversible. An irreversible operation changes the state of the contact system, while a reversible operation will return the contact system to its original state. This contact system then acts as a connection or disconnection of the two contact points. This connection/disconnection completes or breaks the circuit, allowing electricity to flow.

The working principle of a pushbutton switch can also depend on the type of actuator utilized. A momentary type switch is operated by a spring-like actuator within the switch housing. When the user presses the spring, a contact is made and the circuit is closed. When the spring tension is released, the switch will return to its original state and the circuit is opened. For maintained switches, a Toggle switch is used. When the user presses the toggle, the switch will stay in the ‘on’ position until the toggle is manually reset.

In short, pushbutton switches are a type of switch used to control electricity and can be used in a variety of different applications. Pushbutton switches can be operated by an internal contact system, which is activated or moved by the operation of the switch. Depending on the type of actuator utilized, a momentary or maintained switch can be used. Momentary switches are operated by a spring-like actuator while maintained switches are operated by a toggle switch. With its wide range of applications and versatile operation, pushbutton switches are an important piece of technology.

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