Types and principles of rocker switches

Today, the rocker switch is a switch type widely used in the electronic switch industry. Its shape is rectangular, circular or oval, and its operation method is to swing up and down. This article will introduce the types and application principles of rocker switches in detail, so that readers can better understand their applications in different industries.

1. Types of ship type switches

Rocker switches are usually divided into the following three types:

the

Single pole double throw (SPDT) rocker switch: It has the function of a switch controlling a circuit, and the switch of the circuit is controlled by the up and down swing of the switch bridge. It is usually used to control the switch of a single circuit, such as the switch in the TV, TV set-top box and other equipment.
Double Pole Double Throw (DPDT) Rocker Switch: It has the function of two control circuits and can control the switching of two circuits. For example, in a TV, a DPDT rocker switch can be used to control the volume and channel of the TV.
Three-pole double-throw (TPDT) ship-type switch: It can control the switch of three circuits, which is one more circuit than the DPDT switch. For example, switches that can be used to control lights, TV volume, and channels.
In addition to the above types, the appearance of the rocker switch also has a variety of options, such as rectangle, circle, oval, etc., to meet the needs of different application scenarios.

2. Application principle of ship type switch

The working principle of the rocker switch is based on the mechanical switch principle. When the switch bridge swings up and down, the electrodes at both ends are connected or disconnected, thereby controlling the on-off of the circuit. When the switch bridge is connected to the electrodes at both ends, the circuit path is opened and the current flows; when the switch bridge is disconnected from the electrodes at both ends, the circuit path is closed and the current does not flow.

The rocker switch is characterized by easy use, simple operation, and flexible installation. It can be used for various circuit controls and is suitable for occasions with different voltage and current requirements.