Electrical switches are devices used to control the flow of electricity in a circuit. There are various types of electrical switches, each designed for specific applications and functions. Here are some common types:
Single-Pole Single-Throw (SPST) Switch: This is the simplest type of switch with two terminals. It either makes or breaks a single circuit. When the switch is in the ON position, the circuit is closed, allowing current to flow. When the switch is in the OFF position, the circuit is open, and current cannot flow.
Single-Pole Double-Throw (SPDT) Switch: This switch has three terminals and can connect one input circuit to either of two output circuits. It has two possible positions, ON (connected to one output) and OFF (disconnected from both outputs).
Double-Pole Single-Throw (DPST) Switch: This switch has four terminals and consists of two separate SPST switches operated by a single actuator. When in the ON position, both circuits are closed, and when in the OFF position, both circuits are open.
Double-Pole Double-Throw (DPDT) Switch: This switch has six terminals and contains two separate SPDT switches operated by a single actuator. It can connect two input circuits to either of two output circuits.
Momentary Switch: Also known as a tactile switch or push-button switch, it only remains in its ON state while pressure is applied to it. When the pressure is released, it returns to its OFF state.
Toggle Switch: This is a lever-operated switch with two positions, ON and OFF. It stays in the position set by the user until manually toggled to the other position.
Rocker Switch: Similar to a toggle switch, but instead of a lever, it has a rocking mechanism to switch between ON and OFF positions.
Rotary Switch: This switch has a rotating control knob with multiple positions, allowing the user to select different circuits or settings.
Slide Switch: A small switch that moves in a linear direction to change its state.
Dip Switch: Typically used in electronics, it is a small block of manual electric switches with an array of ON/OFF positions, used for configuring electronic devices.
Mercury Switch: A type of tilt switch that uses the motion of a small amount of liquid mercury to make or break the circuit.
Reed Switch: Consists of two ferromagnetic blades enclosed in a glass tube. When a magnetic field is applied, the blades attract, making or breaking the circuit.
These are some of the common types of electrical switches used for various applications in homes, industries, and electronics. The choice of switch depends on the specific requirements of the circuit or system it is intended for.