Difference Between Electrical Energy and Electrical Power

As we know that the electrical energy and electrical power both are the two major terms associated with electrical and electronics systems. The main fundamental difference between electrical energy and electrical power is the electrical energy represents the amount of work done that causes an electric current to flow through a circuit. As the against or electrical power is defined as the rate at which work is done is an electrical circuit. and the rate is specified according to the unit time. Now let us discuss the basic key difference between electrical energy and electrical power to better understand this topic.

 Definition of electrical energy:

 Electrical energy is defined as the overall work done in an electrical circuit. The energy is specified as the amount of work done to move an object and the electrical circuit. Thus the work done on the electric charge in order to cause movement is known as the electrical energy.

 Definition of electrical power:

 Electrical power is defined as the rate at which it is done on an electrical system. As we have discussed recently that doing work generates energy. Thus the power can be given as the rate of consumption of electrical energy.

The main key difference between electrical energy and electrical power:

  • The SI unit of the electrical energy is joules and electrical power is measured in watts.
  • Energy is denoted by E while in P is used to denote electrical power.
  • Electrical energy defines the energy granted due to the movement of charge carriers in a conductor while electrical power specifies the rate of consumption of electrical energy by a device.
  • The produce of power and time give the value of energy however power is the produce of potential difference existing across 2 ends of a conductor and the current flowing through it.
  • The electrical energy is defined as the E = VI.t while in Electrical power is defined as the P = V*I.
  • Electrical energy is the energy generated as the result of the potential difference in a circuit which causes current to flow through it while the electrical power is the rate of the amount of electrical energy transferred.
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Difference Between kW and kWh

The main key difference between the kW and kWh is that the kW measure the power generated and the utilize by the devices whereas the kWh measure the energy consumed by the electrical equipment. Here this article gives information about the difference between kW and kWh to better understand this topic.


Definition of kWh:

  • The kW stands for kilowatt, which measures the power delivered by the electrical device with respect to time or we can say that it calculates the work performed by the electrical appliances regarding time. The home appliances like the fan, the lamp, electrical heater have rated power and this power is measured in kilowatts.

Definition of kWh:

  • The kWh stands for kilowatt-hour which measures the work performed by the appliances at the given period. The kWh measures the energy utilized by the machines. The small consumption of the energy is measured in kilowatt-hour and the large consumption of energy is measured in megawatt-hours.
The main difference between kilowatt and kilowatt-hour is that kW shows a unit of power and kWh is a unit of energy.

  • kW - Power required 
  • kWh - Energy needed to keep the power going

The main key difference between kW and kWh:

  • The kW stands for kilowatt and the kWh stands for kilowatt-hour. The kWh measures the energy which is the product of the total power consumed by the devices and the time in an hour.
  • The kW is the unit of measuring the power utility and consumption by the electrical measures like motor, generator, heater, etc but the kWh measure the energy consumed by the electrical appliances.
  • The kW measures the power consumed by the electrical appliance like a bulb, electric heater, fan, etc while the kWh is mainly used for calculating the energy utilized by the machines.
  • The formula of kilowatts (kW) is joule/second*1000 while in kWh(kill watt-hour) is kW*hour.
  • kW is the amount of power used simultaneously at an any given amount of time while kWh is a unit of 1 kW per hour of time.
How to convert kW to kWh:

kWh can be calculated from kilowatts and the number of hours the appliance has been in operation. With the energy being equal to the power times the period of time, to put it scientifically E(kWh) = P(kW)*t(hours).

 Explore more information:
  1. Difference between power and torque
  2. Difference between active and reactive power
  3. Difference between electrical energy and electrical power
  4. Difference between wattmeter and energymeter
  5. Difference between volts and amps
  6. Difference between volts and watts 

Difference Between Charge and Current

As we know, charge and current are the two most common key terms in the field of electrical and electronics and communication engineering. Most of the times these terms confuse the newbie or those who just started learning the electronics sciences. 

 The key difference between the charge and the current is that the charge is the physical property of matter while the current is the rate of flow of charges. Here this article gives the information about the difference between charge and current are listed below


Definition of charge:

The charge is a fundamental property of particles that allow them to interact with each other via electromagnetic forces. During these interactions, the charge is always conserved. Electric charges could be either positive or negative. As we know that a positive charge refers to the charge carried by a proton while negative charge refers to the charge carried by an electron. 

Definition of  current:

Current is measured in the unit of amperes(A). A current of 1 A refers to the flow of charge where 1 C of charges flow past a point every second. 

The main key difference between charge and current are listed below:

  • The charge experiences the force only in the electrical field, wheres the current experience the force both in the electric and magnetic fields.
  • The coulomb is the unit of electric charges while the current in the measured the amperes.
  • The charge is the property of matter because of which the matter experiences the force of attraction or repulsion in an electric field. While the current is the rate of flow of charged particles called electrons.
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Difference Between Power and Torque

As we know, Power and Torque are the two most common key terms in the field of electrical and electronics and communication engineering. Most of the times these terms confuse the newbie or those who just started learning the electronics sciences. 

Definition of Torque:

The torque is the measure of the circular force whose effect can rotate by the particular type of the object. In other words, it is the product of the force and the distance. The torque is also called the twisting power. The SI unit of the torque is newton-meter an equivalent to joule.

Definition of Power:

Power is the measure of the amount of the work done, or in other words, power is defined as the amount of energy utilize a part unit of time. It is measured in joules/seconds and the SI unit is a watt. The power is mainly into two types the electrical power and mechanical power.

One of the major differences between power and torque is that the power is the amount of work done by an object while the torque is the tendency of the force to rotate object in a particular direction. Here this article gives information about the difference between power and torque are listed below.

The main key difference between power and torque are listed below:

  • The unit of power is a joule per second while the unit of torque is equivalent to the joule.
  • The power is the amount of energy per unit of time whereas the torque is the measure of energy whose effect can rotate the object.
  • The SI unit of power is the watt, whereas the SI unit of the torque is newton-meter.
  • The power is represented by the letter P whereas the torque is represented by the greek alphabet T.
  • The torque is induced when the force is applied to an object or body. While the electrical power is caused by the generator or through the battery and also the mechanical power is developed by doing some work. 
  • The power is defined as a ratio of the energy consumed with respect to time whereas the torque is the product of the force and distance.
  • The power is mainly classified into two types, mechanical power, and electrical power. There is no specific type of torque.
  • The electrical power is measured through the energy meter or multimeter whereas the torque is measured through a torque sensor or torque meter.
  • The power is a scalar quantity whereas the torque is a vector quantity. Torque twisted the object in a direction opposite to which the force applied to it.
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Difference Between Volt and Amp

As we know, Volts and amp are the two most common key terms in the field of electrical and electronics and communication engineering. Most of the times these terms confuse the newbie or those who just started learning the electronics sciences.

 Definition of Volt:

 The volt is measured by the work done by the electric charge to move from one end to another. It is the unit of the potential difference, electric potential, and electromotive force. The volt is represented by the symbol of V. The subunit of volts is microvolt, megavolt, millivolt.

 Definition of Amp:

 The ampere is a rate of flow electric charge flow through the conductor. The SI unit of electric current. It represented by the symbol of A. 

 One of the major differences between the volt and amp is that the volt is the SI unit of the voltage, electromotive force, potential difference whereas the amp is the SI unit of the current. Here this article gives the difference between volt and amp to better understand this topic.

The main key difference between volt and amp are listed below:

  • The volt has measured the force which causes the electrons to flow through the conductor whereas the amp measures the rate of flow electrons.
  • Volt and amps are correlated by ohm's law.
  • The volt represented by the symbol, of V and the ampere is represented by the symbol of A.
  • Power sources are often labeled by how many volts it has but while you can only get the number of amps when you can apply the power source to the circuit.
  • Volt is equal to the ratio of joule/coulomb whereas the amp is represented by the Coulomb/second,
  • The volt is the unit of potential difference, Voltage and electromotive force whereas the amp is the unit of current(I).
  • Most of the batteries have a fixed voltage but their ampere varies with higher amperage batteries lasting longer.
  • The volt is measured by the voltmeter whereas the amp is measured by the ammeter.
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Difference Between Volts and Watts

As we know, Volts and watts are the two most common key terms in the field of electrical and electronics and communication engineering. Most of the times these terms confuse the newbie or those who just started learning the electronics sciences.


Definition of Volts:

A volt is describing that the potential difference between two points of a conducting wire carrying a constant current of 1 ampere when the power dissipated between these points is equal to 1 watt. The symbol of a volt is V.

Definition of Watts:

A watt has expressed the rate of power flow. When one amp flow through an electrical difference of one volt, its result is expressed in terms of watts. W is the symbol for watt or watts.

One of the major differences between the volts and watts is that the volt is the SI unit of electromotive force and potential difference while in the watts measure the SI unit of power. Here this article gives information about the difference between volts and watts to better understand this topic.

The main key difference between volts and watts are listed below:

  • The SI unit of electromotive force and potential difference, whereas the watt is the SI unit of power.
  • The symbolic representation of volts is V and the watt is represented by the symbol of W.
  • The formula of the volt is potential energy/ charge, Formula of watt is volt*current.
  • In volts, a small amount of power is measured whereas watt measures the real power utilizes by the electrical devices.
  • The reading takings in volt are easier as compared to watts because the main reason that watt requires both the quantities of voltage and current.
  • The value in volts is measured by the voltmeter whereas the watt is measured by the power meter.
  • The reading taking of volts is very easy when compared to watts while the reading taking of watts is difficult since it required quantities of both voltage and current.
  • Volt describes a small portion of voltage from the power source, watts gives a more realistic measurement for power.
  • The base unit of watt us KgM2S-3 and the base unit of a volt are KgM2A-1S-3. The base unit is the fundamental unit that is not combined with any other unit examples- meter, kilogram, ampere, etc.
  • The power supplies and batteries often show how many volts it provides but not how many watts.
  • Volt is derived a portion of the power source while the watts can give you a more realistic measurement.
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Galvanometer vs Voltmeter

Galvanometer and voltmeter are measuring the device which is often used to evaluate the electric circuit. The main comparison between galvanometer and voltmeter is that a galvanometer is a type of device which has parts that move in response to an electric current, while in a voltmeter is a device that is used to measure the potential difference between two points in a circuit.

What is Galvanometer?


As we know, the Galvanometer is a particular type of analogue using induction in a coil to deflect a needle against the resistance of a spring. They were often used as one component in building wider range ammeters and voltmeter.

What is Voltmeter?


A voltmeter is also known as the voltage meter. It is an instrument that measures the voltage or potential difference in voltage known as the voltmeter. As we know, The voltmeter is always connected in parallel with the circuit. Some voltmeter is intended for the direct current called as a DC circuit and other designed for alternating current called the AC circuit.
This the instrument used to measure electric potential difference or EMF between two points in an electric circuit.

Difference between Galvanometer and voltmeter:

  • A galvanometer is an instrument used to detect the flow of current in the circuit, while in voltmeter is in the instrument used to show the amount of potential difference across two points in the circuit.
  • A galvanometer tells the direction of current in the circuit, Voltmeter tells nothing about current in the circuit.
  • A galvanometer connected series in the circuit, voltmeter connected parallel in the circuit.
  • A galvanometer is a moderate resistance, While in ideal voltmeter should have infinite resistance hence the resistance of a voltmeter is very high.
  • The magnetic field is required for a Galvanometer work, Voltmeter can work with or without a magnetic field.
  • A galvanometer measure only direct current, Voltmeter tells nothing about current in the circuit.
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Advantages and disadvantages of Galvanometer

A Galvanometer is one type of ammeter. A galvanometer is an instrument for detecting and also a measuring electric current. The Galvanometer is the device that is used for measuring the magnitude of the device or detecting the presence of a small voltage(V) and current(I). The Galvanometer is mainly used in the potentiometer and bridges where they indicate the zero current or called the null deflection. Here this article gives information about the advantages and disadvantages of Galvanometer to better understand this topic.

Advantages of galvanometer:
  • It will not affect by a strong or big magnetic field.
  • It is accurate and reliable.
  • Scales of this is uniform.
Disadvantages of galvanometer:
  • Overload can spoil and kind of galvanometer.
  • We can not change the restoring torque easily.
  • The temperature change will cause a change within restoring torque.
  • These cannot be used for AC quantities measurement.
This article also gives information about moving coil Galvanometer to better understand this topic.

Advantages and disadvantages of a moving coil galvanometer:


Advantages of moving coil galvanometer:
  • High accuracy and reliability
  • The torque to weight ratio is high.
  • High sensitivity.
  • Their scale is uniform.
  • Not easily affected stray magnetic fields.
Disadvantages of moving coil galvanometer:
  • It can be used only to measure direct currents.
  • Develops errors due to factors like aging of the instruments, permanent magnets and damage of spring due to mechanical stress.
  • The change in temperature causes a change in restoring torque.
  • Restoring torque can not be easily changed.
  • Such an instrument can be used only measurement direct current quantity and can not be used for measurement of alternating current quantities.
  • There are possibilities of damage to phosphor bronze fiber or helical restoring spring due to severe stress.

Application of Galvanometer

A galvanometer is used for detecting and measuring electric current. The most common use of galvanometers was as instruments use an analog measuring instrument called as ammeter used to measure the direct current an electric circuit. Here this article gives what is the applications of Galvanometer to better understand this topic.

Uses of Galvanometer:

  • It is used for measuring the current.
  • The voltage between any two points of the circuit is also determined through the galvanometer.
  • It is used for detecting the direction of current flow in the circuit.
  • It also determines the full point of the circuit. The null point which means the situation in which no current flows through the circuit.
  • They are used in a film camera to get the reading of photoresistors in the metering mechanisms.
  • They are used in CD/DVD played and hard drives for controlling the position of head servos.
  • They are used in the control system, laser engraving, laser TVs, laser sintering, of head servos.

Why is Voltmeter connected in Parallel?

As shown in the figure, a voltmeter is connected in parallel with circuit elements because it is used to measure the voltage of the device. So important is that because elements in series have a high potential difference and high internal resistance. The amount of current passing through very less. Therefore the current through the circuit is unaltered. 

Parallel Connection
          Parallel Connection



If the voltmeter is connected in series with the circuit, it will change the potential difference which will minimize the current in the circuit as it has very large resistance and you will get faulty reading. Thus the disturb the reading of the voltmeter.




Why voltmeter has high resistance?

Voltmeters supposed to have infinite/very high resistance to avoid loading effect. The voltmeter is constructed with very high internal resistance the reason of that it measures the potential difference between the two points of the circuit. At that time, the voltmeter does not change the current of the measuring device.

 If we consider the resistance of the voltmeter won't be high, it would draw some current and the other resistors connected in parallel with it will not get enough current through them.

If the voltmeter considers being to be low resistance the current passes through it, and the voltmeter gives the incorrect or wrong result. The high resistance of the voltmeter does not allow the current to pass through it and thus that time the correct reading is obtained.

What is voltmeter?

Definition of voltmeter?


A voltmeter is also known as the voltage meter. It is an instrument that measures the voltage or potential difference in voltage known as the voltmeter. As we know, The voltmeter is always connected in parallel with the circuit. Some voltmeter is intended for the direct current called as a DC circuit and other designed for alternating current called the AC circuit.

It works on the basic principle that the torque deflects the pointer of the instrument. Thus defection of the pointer is directly proportional to the potential difference between the points.

Symbolic represantation of voltmeter?


Voltmeter symbol
Voltmeter symbol


Type of voltmeter:


Voltmeter types
Voltmeter types 


1. Classification  on the basis of Output:


  • Analog voltmeter 
The analog voltmeter uses for measuring the AC voltage. An analog voltmeter consists of a sensitive galvanometer in the series with high resistance. In this type, the internal resistance of a voltmeter must be high. The sensitivity of the galvanometer and the value of the series resistance determine the range of voltage that the meter can display.


  • Digital voltmeter 
The voltmeter which displays the values or reading in the numeric form is known as the digital voltmeter. The digital voltmeter gives an accurate result.

2. Classification on the basis of construction

  • Rectifier type voltmeter 
This type of instrument is used as the AC circuit for voltage measurement. The rectifier instrument converts the AC quantity into the DC quantity with the help of the rectifier. And this can the DC signal is measured the PMMC instrument.
  • MI voltmeter
MI instrument means that moving iron instrument. It is used for both AC and DC measurements, just because the deflection proportional to the square of the voltage assuming impedance of the meter to constant, so whatever is the polarity of the voltage it shows directional defection.

The moving iron instrument is classified into two categories:
  • Attraction type moving iron instrument
  • Repulsion type moving iron instrument
  • PMMC voltmeter


This voltmeter can work on the principle that the current-carrying conductor placed in the magnetic field and because of the current force acting on the conductor. The current induces in the PMMC because of the measured voltage, and this current deflects the pointer of the meter.



3. Classification on the basis of Measurement 

The voltmeter which measures the direct current is known as the DC voltmeter and is used in the AC circuit for alternating voltage measurement called  AC voltmeter.

 Explore more information:
  1. Why is Voltmeter connected in Parallel?
  2. Why voltmeter has high resistance?
  3. Advantages and disadvantages of digital voltmeter
  4. Advantages and disadvantages of digital voltmeter over Analog voltmeter
  5. Difference between digital voltmeter and analog voltmeter
  6. Difference between Galvanometer and voltmeter

Advantages and disadvantages of digital voltmeter

The Digital voltmeter displays the voltage readings of a circuit numerically. It measures AC or DC voltage and displays the value directly in numeric form instead of pointer reflection. A Digital voltmeter was introduced which gives the numerical display of voltage with accuracy. This article gives information about the advantages and disadvantages of digital voltmeter to better understand this topic.

Advantages of digital voltmeter:

  • Digital voltmeter is more stable and reliable.
  • The digital display of the output eliminates the human reading error.
  • A Digital voltmeter is void of parallax errors.
  • Digital voltmeter has an automatic range selection.
  • A Digital voltmeter provides better resolutions.
  • It is a smaller size and cost-effective.
  • DVM can measure both AC and DC voltages.
  • Reading is accurate and fast compared to an analog meter.
  • Latest DVM is built with a microcontroller that stores the readings for further processing.
  • The range can be taken very fast.
  • Various processing features available like RMS, peak capture, relative offset, dB, Time averaging, etc.

Disadvantages of digital voltmeter:

  • Digital voltmeter is prone to damage if the voltage is increased beyond the limit.
  • It is very hard to spot the transient voltage spikes.
  • The Analog to digital converter has a limitation on word length which causes quantization noise giving rise to errors in measured values.
  • This display depends on the external power source or the battery.
  • The speed of operations is limited due to the digitizing circuit in digital voltmeters.
  • When a fluctuation occurs in a circuit the digital voltmeter cannot read and display an error.
  • While measuring the voltage, there are chances of the digital voltmeter getting the heated up. This might output the wrong readings.
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Difference between digital voltmeter and analog voltmeter



What is an analog voltmeter?

Analog voltmeter is a move pointer across a scale in proportion to the voltage of the circuit.

 What is a digital voltmeter?

With the time an analog voltmeter is replaced by digital voltmeter due to the same advantages associated with digital systems. Digital voltmeter gives a numerical display of voltage by the help of an analog to digital converter. 

The main comparison between analog voltmeter and a digital voltmeter is that digital voltmeter electronically displays results on an LCD screen while in we are using analog voltmeter gives the reading by moving a needle across a printed background of possible results.

The main key difference between analog voltmeter and digital voltmeter are listed below:


  • In Digital voltmeter the output signal is represented in the form of digital. While in analog voltmeter the output signal representation is done by using potentiometric deflection.
  • Digital voltmeter is two types: Ramp type and integrated type while in analog voltmeter are three types: Average reading, true RMS reading, sampling type, etc.
  • Digital voltmeter has an overload indication, an analog voltmeter has no overload indication in analog voltmeter. 
  • In a digital voltmeter has better resolution compared to an analog voltmeter.
  • A digital voltmeter can be programmed, Analog voltmeter cannot be programmed.
  • Sensitivity is more in digital voltmeter compare to an analog voltmeter.
  • Digital voltmeter has a speed of operation is more Burt in analog voltmeter the speed of operation is less.
  • While we are using digital voltmeter the digitization of signal is required while in analog voltmeter is not require digitization of signal.
  • The more number of measurement range while using digital voltmeter compared to an analog voltmeter.

In this theory, we have to discuss the difference between an analog voltmeter and a digital voltmeter. I hope by reading this article you have to gain some basic information about this article. If you have any queries regarding this article or to implement any electronics or electrical project please feel free to comment in the below section.

 Explore more information:

  1. Difference between potential difference and EMF
  2. Difference between ammeter and voltmeter
  3. Difference between ammeter and ohmmeter
  4. Difference between galvanometer and ammeter 
  5. Difference between analog voltmeter and digital voltmeter
  6. Difference between DC voltmeter and AC voltmeter

Advantages and disadvantages of digital voltmeter over analog voltmeter

Whenever you measure electrical equipment, you will need a meter that can measure volts, amperes, and ohms. Most meters can do all three and have a voltmeter, ohmmeter and ammeter for features uses. However, there are two kinds of meters: Analog and digital. Here this article gives the advantages and disadvantages of digital voltmeter over analog voltmeter to better understand this topic.

There are some advantages and disadvantages of digital voltmeter over an analog voltmeter are listed below :


Advantages of digital voltmeter:
  • A digital voltmeter gives good stability.
  • Digital voltmeter has an automatic range selection.
  • A digital voltmeter can be programmed so controlling by computer is achieved.
  • It provides a better resolution.
  • It has a high speed.
  • It is bipolar.
  • It is auto-ranging.
  • Extremely high input impedance.
  • The internal calibration does not depend on o the measuring circuit.
  • Reading can be taken very fast.
  • Digital voltmeter has an automatic range selection.
  • No moving part extremely rugged and able to be made impervious to drops and shock and vibration encountered with rough use handling.
  • Overrange protection.
Disadvantages of digital voltmeter:
  • It gives some extra feature are expensive.
  • This voltmeter is usually very hard to spot transient voltage spikes, etc.
  • The speed of operation is limited due to the digitizing circuit.
  • While we have to use the display depends on the external power source or battery.
  • Digital voltmeters are prone to damage if the voltage is too much increased beyond the limit.
  • It is very to spot the transient voltage spikes.
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Difference between galvanometer and ammeter | Galvanometer vs Ammeter

What is Galvanometer?

The galvanometer uses a moving coil which is free to rotate between the permanent magnet. When the current flows through the coil, it becomes deflected and that produces the deflection of the coil is directly proportional to the current flow through it. At that time the galvanometer is converted into the ammeter by connecting the resistance in parallel with the circuit and if the resistance is connected in series with a galvanometer then it is used as a voltmeter.

What is ammeter?

The ammeter is also known as the ampere meter. The ampere is the unit of the current, so the ampere meter is the type of meter which measures the magnitude of current passes through it. It is connected in series wit circuit for determining the exact value of the circuit current. 


The main comparison between these two that the galvanometers and ammeter are that the galvanometer show both the direction and magnitude of the current, While the ammeter only shows the magnitude of the current. The other main key difference between galvanometer and ammeter are listed below

The main key difference between galvanometer and ammeter:

  • The accuracy of the galvanometer is less than the ammeter.
  • The sensitivity of the galvanometer is much more as compared to that ammeter.
  • The magnetic field is required for the working of the galvanometer whereas it is not essential fo the ammeter.
  • The galvanometer is a mechanical device that is used for determining the magnitude as well as the direction of the current while in the ammeter is the electric device which is used for measuring the magnitude of the current.
  • The galvanometer shows the direction of current flow in the circuit whereas the ammeter measures the magnitude of current flow through it.
  • Galvanometer work with the presence of a magnetic field but in ammeter is work with or without magnetic field.
  • Galvanometer has measure only direct current but ammeter measure both direct and alternating current.
  • Galvanometer used as a potentiometer and bridge while in Ammeter used as an electrical circuit.
  • The galvanometer is mostly used in a bridge and potentiometer for knowing the zero current whereas the ammeter is directly connected in series with the circuit whose magnitude is to be measured.
  • Both connected in a series in a circuit.
  • Galvanometer has a moderate resistance while the ideal ammeter should have zero resistance, hence the resistance of an ammeter is very small.

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Selection of fuse

How to select the fuse?


  • There must be a security against tire risk when the fuse is blown.
  • Sufficient clearance between terminals.
  • It must operate when a sustained overload or short circuit occurs.
  • There should be a good insulating part for the use.
  • It should provide easy replacement of the fuse wire.
  • It should no operate under the condition of momentary overload and wiring switching surge which are experience when starting a motor and switching on transformers. capacitor etc. 

Difference between DM and ADM

What is DM?

Delta modulation is a scheme to permit the use of a simple quantizing strategy for constructing the encoded signals which are oversampled purposely, to increase the correlation between adjacent samples of the signal, as seen in the differential pulse code modulation method(DPCM).


What is ADM?

This modulation is a refined form of delta modulation. This method was introduced to solve the granular noise and slope overload error caused during the delta modulation method. This modulation is exactly similar to delta modulation except that the step size is variable according to the input signal in adaptive delta modulation whereas it is a fixed value in delta modulation.


Here this article gives the difference between delta modulation and adaptive delta modulation to better understand this topic.


Difference between DM and ADM:


  • DM stands for delta modulation while in ADM stands for adaptive delta modulations.
  • Both are used for only one bit per one sample, 
  • In Delta, the modulation step size is kept fixed and cannot be varied while in Adaptive delta modulation according to signal variations step sizes varies.
  • Complexity in implementation is simple in both systems.
  • Feedback exists in the transmitter while using delta modulation, while ADM feedback exists.
  • Both having the lowest bandwidth is required.
  • In Delta modulation quantization error and distortion is dependent on when Slop overload distortion and granular noise are present while in adaptive delta modulation Qulanatization noise is present but other errors are absent. 
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