ACTUATOR - ELECTRICAL

FACULTY- SUSRI ANJANA SAHU

SEMESTAR- 5^TH MECHA ENGG.

SUBLECT- MECHATRONICS

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SWITCH

• In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another.

TYPE OF SWITCH

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• Single Pole Single Throw Switch (SPST)
• Single Pole Double Throw Switch (SPDT)
• Double Pole Single Throw Switch (DPST)
• Double Pole Double Throw Switch (DPDT)
• Push Button Switch.
• Toggle Switch.
• Limit Switch.
• Float Switches.

SINGLE POLE SINGLE THROW SWITCH (SPST)

• This switch has three terminals, one is input contact and remaining two are output contacts.

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SINGLE POLE DOUBLE THROW SWITCH (SPDT)

• This is the basic ON and OFF switch consisting of one input contact and one output contact.

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DOUBLE POLE SINGLE THROW SWITCH (DPST)

• It has six terminals, two are input contacts and remaining four are the output contacts.

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DOUBLE POLE SINGLE THROW SWITCH (DPST)

It has six terminals, two are input contacts and remaining four are the output contacts.

PUSH BUTTON SWITCH.

• It is a momentary contact switch that makes or breaks connection as long as pressure is applied (or when the button is pushed).

A toggle switch is manually actuated (or pushed up or down) by a mechanical handle, lever or rocking mechanism. These are commonly used as light control switches.

TOGGLE SWITCH

LIMIT SWITCH.�

• These switches consist of a bumper type of arm actuated by an object. When this bumper arm is actuated, it causes the switch contacts to change position.

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FLOAT SWITCHES

• Float switches are mainly used for controlling DC and AC motor pumps according to the liquid or water in a tank or sump.

RELAY

A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations there of.

SOLENOID

A solenoid is a device comprised of a coil of wire, the housing and a moveable plunger (armature). When an electrical current is introduced, a magnetic field forms around the coil which draws the plunger in. More simply, a solenoid converts electrical energy into mechanical work

DC MOTORS

• A DC motor is any of a class of rotary electrical motors that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields.

TYPE OF DC MOTOR

• Series DC motor .
• Shunt DC motor .
• Compound DC motor .
• Permanent magnate Dc motor .

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PERMANENT MAGNATE DC MOTOR

• A Permanent Magnet DC motor (or PMDC motor) is a type of DC motor that uses a permanent magnet to create the magnetic field required for the operation of a DC motor. The motor that drives these toys is nothing but a permanent magnet DC motor or PMDC motor.

SERIES DC MOTOR

• A series DC motor connects the armature and field windings in series with a common D.C. power source. The motor speed varies as a non-linear function of load torque and armature current

SHUNT DC MOTOR

• A shunt DC motor connects the armature and field windings in parallel or shunt with a common D.C. power source. This type of motor has good speed regulation even as the load varies, but does not have the starting torque of a series DC motor.

COMPOUND DC MOTOR

• A compound DC motor connects the armature and fields windings in a shunt and a series combination to give it characteristics of both a shunt and a series DC motor. This motor is used when both a high starting torque and good speed regulation is needed.

AC MOTOR

• An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field

TYPE OF AC MOTOR

STAPPER MOTOR

A stepper motor is a type of DC motor that works in discrete steps. It is a synchronous brushless motor where a full rotation is divided into a number of steps .

TYPE OF STAPPER MOTOR

• Permanent magnet stepper.

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• Variable reluctance stepper.

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• Hybrid synchronous stepper.

SERVO MOTOR

A servomotor is a linear actuator or rotary actuator that allows for precise control of linear or angular position, acceleration, and velocity. It consists of a motor coupled to a sensor for position feedback.

TYPE OF DC SERVO MOTOR

TYPE OF AC SERVO MOTOR