A 4 pin push button switch is a commonly used component in electrical circuits, particularly in automotive applications. It is easy to use and install, and is known for its reliable performance. In this article, we will discuss the wiring diagram of a 4 pin push button switch, and how it works in different applications.
What is a 4 Pin Push Button Switch?
A 4 pin push button switch is a type of switch that is operated by pressing a button. It has four pins, which are used to connect it to a circuit. The pins are usually labelled as NO, NC, C, and +. NO stands for Normally Open, NC stands for Normally Closed, and C stands for Common. + represents the positive supply voltage of the circuit.
When the button is not pressed, the NO pin is connected to the C pin, and the NC pin is disconnected from the C pin. When the button is pressed, the NO pin is disconnected from the C pin, and the NC pin is connected to the C pin.
Wiring Diagram of a 4 Pin Push Button Switch
The wiring diagram of a 4 pin push button switch is quite simple. It consists of four connections – NO, NC, C, and +. The connections are made by connecting wires to the pins of the switch. The following diagram shows the wiring diagram of a 4 pin push button switch:
| Pins | Connection |
|---|---|
| NO | Normally Open |
| NC | Normally Closed |
| C | Common |
| + | Positive Supply Voltage |
The diagram shows that the NO pin is connected to the positive supply voltage when the button is pressed, and is not connected when the button is not pressed. Similarly, the NC pin is not connected when the button is pressed, and is connected to the positive supply voltage when the button is not pressed. The C pin is always connected to the positive supply voltage.
How to Connect a 4 Pin Push Button Switch?
Connecting a 4 pin push button switch is a simple process. The switch can be connected to a circuit using the following steps:
Step 1: Identify the Pins
The first step is to identify the pins of the switch. The pins are usually labelled as NO, NC, C, and +. The + pin is the positive supply voltage, and is usually connected to the positive terminal of the battery or power supply.
Step 2: Connect the Wires
The next step is to connect wires to the pins of the switch. The NO and NC pins are connected to the inputs of the circuit, while the C pin is connected to the output of the circuit. The + pin is connected to the positive terminal of the battery or power supply.
Step 3: Test the Connection
Once the wiring is complete, test the connection by pressing the button. When the button is pressed, the NO pin should be disconnected from the C pin, and the NC pin should be connected to the C pin. When the button is released, the NO pin should be connected to the C pin, and the NC pin should be disconnected from the C pin.
FAQ
A 4 pin push button switch is used to control the flow of current in a circuit. When the button is pressed, it opens or closes the circuit, depending on whether it is a normally open or normally closed switch.
A 4 pin push button switch is commonly used in automotive applications, such as in the starter circuit, brake lights, and power windows. It is also used in industrial control systems, security systems, and home automation systems.
Yes, a 4 pin push button switch can be used in a DC circuit, as long as the voltage and current ratings of the switch are compatible with the circuit. However, it is important to ensure that the switch is wired correctly, as reversing the polarity of the switch can damage it.
A normally open 4 pin push button switch is a switch that is open when it is not pressed, and closed when it is pressed. A normally closed switch, on the other hand, is closed when it is not pressed, and open when it is pressed. The choice of switch depends on the application and the desired function.
Yes, a 4 pin push button switch can be used as a momentary switch, as it is designed to be pressed and released quickly. However, it is important to ensure that the switch is rated for the desired number of operations, as frequent use can cause the switch to wear out.
