What is the theory of push button switches?

The theory behind push button switches is relatively straightforward. Push button switches, also known as momentary switches, are electrical switches that are actuated by pushing a button. When the button is pressed, it makes or breaks an electrical connection, allowing or interrupting the flow of electricity.

Here's a basic explanation of how they work:

1. Contact Mechanism: Inside the switch, there are metal contacts that are normally separated when the button is not pressed. These contacts are typically made of materials like copper or silver.

2. Spring Mechanism: There is usually a spring mechanism involved that keeps the contacts apart when the button is not being pressed. This ensures that the circuit remains open.

3. Pushing the Button: When you press the button of the switch, it compresses the spring mechanism. This force brings the metal contacts together, closing the circuit.

4. Electrical Flow: With the contacts touching, electricity can flow through the switch, allowing whatever device or circuit it's a part of to operate.

5. Release: When you release the button, the spring mechanism pushes the contacts apart again, breaking the circuit and stopping the flow of electricity.

Push button switches are commonly used in a variety of applications, from controlling lights and appliances to triggering electronic devices or machinery. They're favored for their simplicity, reliability, and ease of use.