Key Switch Schematic Diagram

A key switch is a type of switch that is activated by the insertion or removal of a key. Key switches are commonly used in electronic devices such as keyboards, mice, and door locks. Key switches are typically made of a metal or plastic housing that contains a spring-loaded plunger. When a key is inserted into the switch, the plunger is depressed and contacts two electrical terminals. This completes the circuit and allows electricity to flow to the device. When the key is removed, the plunger springs back up and breaks the circuit.

Key switches are available in a variety of sizes and shapes. They can be mounted on a PCB or surface-mounted. Key switches can also be configured with different numbers of terminals. The most common type of key switch has two terminals, but there are also key switches with three or more terminals.

Key switches are typically rated for a certain number of keystrokes. The number of keystrokes a switch can withstand before it fails is called the switch's MTBF (mean time between failures). Key switches are also rated for a certain amount of force. The force required to activate a switch is called the switch's actuation force.

Key switches are an important component of many electronic devices. They provide a convenient way to input data and control devices. Key switches are also relatively inexpensive and easy to use.

Here is a schematic diagram of a simple key switch:

250px Key switch schematic.svg

In this diagram, the key switch is represented by the symbol "SW". The two terminals of the switch are labeled "A" and "B". When the key is inserted into the switch, the plunger is depressed and contacts the two terminals. This completes the circuit and allows electricity to flow to the device. When the key is removed, the plunger springs back up and breaks the circuit.

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