Figure 1: PMMC Instrument. Working Principle of PMMC Instrument When a current carrying conductor is placed in a magnetic field the force is produced on the conductor (coil). This force tends to move the coil in the space.
An inductor is a coil or electromagnetic device that oppose any change in current. Inductors or coils, probably vary more in design than any other component. Basically, an inductor is a conducting wire wound on an insulator. Inductor is the name of a component. Its value is called as inductance.
What is an Inductor? Definition, Meaning, Unit, Symbol, Types, Uses & Applications Read More »
Strain gauge is a resistive type transducer which converts change in mechanical displacement into a proportional change in resistance. It is the most commonly used method of displacement measurement.
What is Strain Gauge? Working Principle, Diagram, Types, Derivation & Formula Read More »
Figure 1. Force acting on a Current Carrying Conductor placed in a Magnetic Field.
Force on a Current Carrying Conductor in Magnetic Field Read More »
DC voltmeter like PMMC meter works on DC supply but this meter can work on AC supply as if it is a AC voltmeter. Figure 1. What is required is an additional device to be connected between AC supply and PMMC meter is a Rectifier unit. If single diode is used as a rectifying unit for
What is an AC Voltmeter? Circuit Diagram, Working and Types Read More »
An optocoupler is a solid state electronic device, which includes a light emitter, light path and a light detector enclosed in single package. It is also referred as optoisolator, since it provides electrical isolation between any two circuits.
What is an Optocoupler? Working, Block Diagram & Applications Read More »
In Single Phase Half Wave Controlled Rectifiers the load power can be controlled in only one half cycle of the input ac supply. Figure 1: Single Phase Half Wave Controlled Rectifier.
It is possible to apply more than one input signal to an inverting amplifier. This circuit will then add all these input signals to produce their addition at the output. Such a circuit will then be called as an adder or a summing amplifier.
The voltage gain of the Voltage Follower (Buffer) circuit is 1 i.e. the output voltage will be equal to and in phase with the input voltage. In other words, the output voltage follows the input voltage. Hence the name voltage follower. Thus voltage follower is a non-inverting amplifier with a voltage gain of unity. Figure