2 position rotary switches are common components used in many electronic devices for switching between two different states. The switch has two positions, which are usually referred to as “A” and “B”. A rotary switch is useful when you want to toggle between two different modes of operation in a circuit.
What is a 2 position rotary switch?
A 2 position rotary switch is a type of switch that has two positions, A and B. It is a type of selector switch because it selects between two different states. Rotary switches are often used in electronic circuits because of their compact size and ease of use. They can be used to turn a device on or off or to select between different modes of operation. Rotary switches are available in a variety of styles and configurations, including single-pole, double-throw (SPDT), single-pole, single-throw (SPST), and double-pole, double-throw (DPDT).
How to wire a 2 position rotary switch?
Wiring a 2 position rotary switch is relatively simple. The switch has three terminals: common, A, and B. The common terminal is connected to the power supply, while the A and B terminals are connected to the devices that need to be switched on and off.
Here is a diagram of how to wire a 2 position rotary switch:
| Terminal | Description | Wire Color |
|---|---|---|
| Common | Connected to power supply | Black |
| A | Connected to device A | Red |
| B | Connected to device B | Green |
To wire the switch, connect the black wire to the common terminal, the red wire to terminal A, and the green wire to terminal B. When the switch is in the A position, the device connected to terminal A will be on. When the switch is in the B position, the device connected to terminal B will be on.
FAQs
What is the purpose of a rotary switch?
The purpose of a rotary switch is to select between different modes of operation in a circuit. It can also be used to turn a device on or off.
How many positions can a rotary switch have?
A rotary switch can have as many positions as needed. Common options include 2, 3, 4, 6, 8, and 12 positions.
What is the difference between SPDT and SPST switches?
The main difference between single-pole, double-throw (SPDT) and single-pole, single-throw (SPST) switches is that SPDT switches have two positions, while SPST switches have only one position. SPDT switches are useful when you need to select between two different states, while SPST switches are useful when you only need to turn something on or off.
What are the advantages of using a rotary switch?
Rotary switches are compact, easy to use, and can be used in a variety of electronic applications. They are also generally more durable than other types of switches because they do not have any moving parts that can wear out over time.
Can rotary switches be used in high voltage applications?
Yes, rotary switches can be used in high voltage applications. However, it is important to choose a switch that is rated for the voltage and current of the application.
