Taut Band Instrument: The Taut Band Instrument utilizes the same principle as the D'Arsonval movable coil and fixed magnet. The primary difference between the two is the method of mounting…
Practical PMMC Movement: The basic Practical PMMC Movement (also called a D'Arsonval movement) offers the largest magnet in a given space, in the form of a horse-shoe, and is used…
Working Principle of D Arsonval Galvanometer: The action of the most commonly dc meter is based on the fundamental principle of the motor. The motor action is produced by the…
Different Types of Ammeters and Voltmeters: The following are the different types of ammeters and voltmeters in measuring instruments are PMMC Moving Iron Electrodynamometer Hot wire Thermocouple Induction type Electrostatic…
AC Series Motor: A series motor can be run from either dc or ac (single-phase) supply provided that both stator and rotor cores are laminated to limit the iron-loss. Figure…
2 Phase 4 Pole Permanent Magnet Stepper Motor: Figure 10.39 shows the phases (stacks) of a 2 Phase 4 Pole Permanent Magnet Stepper Motor. The rotor is made of ferrite…
Shaded Pole Motor Working Principle: Figure 10.17 shows a typical Shaded Pole Motor with a squirrel-cage rotor. A small portion of each pole is covered with a short-circuited, single-turn copper…
Split Phase Motor: When a motor is provided with two windings, even though these are excited from the same voltage (supply being single-phase), the currents in the two windings can…