Important points
Series circuit Vs Parallel circuit
There are different types of circuit Series circuit All the resistances are connected in series. A single path for the current to flow hence current remains the same. The voltage across each resistor depends on the value of resistor. As resistance increases, volt drop also increases. Parallel circuit All the resistances are connected in parallel…
Ohm’s law and its limitations
What is Ohm’s law? The voltage across conducting material is directly proportional to the current flowing through the material, provided the physical conditions remains the same. Power dissipated in the resistor Limitations of Ohm’s law •Does not apply to non linear devices like diode and transistors. •Does not apply to all non-metallic conductors. •Law is…
How to find resistor value using colour code?
In this article, we will see about the resistance colour coding. In small resistors, colour coding is used to denote the value of resistance as it will be difficult to print the numerical value on the small resistors. There are different types of resistors- 4 band resistor, 5 band resistor and 6 band resistor. In…
Resistance and temperature coefficient of resistance
In this article we will see about the passive component resistance and the factors affecting the resistance. The effect of temperature on resistance is also highlighted. What do you mean by resistance? Resistance is the opposition offered by a substance to the flow of electric current. Higher the resistance lower the current flow in the…
Basic Electrical Engineering-Charge,Current, Voltage
Whenever we hear the word “Electrical Engineering” or Electrical Technology, the first thing come to our mind is electricity. Today, the modern world completely relies on electricity. In this article we will see about the basics of electricity. Modern Electron Theory All matters are composed of minute particles called molecules. Each molecule is made up…
Voltage control of single phase inverter
In many applications it is necessary to control the output voltage of inverters. Various methods for the control of output voltage are 1. External control of ac output voltage 2. External control of dc output voltage 3. Internal control of inverter 1. External control of ac output voltage In external control of ac voltage, the…
Three phase full bridge inverter-120 degree mode
Inverter is a device that converts dc power into ac power at desired output voltage and frequency. The output voltage waveform of an ideal inverter should be sinusoidal. However, the waveform of practical inverter are non sinusoidal and contain certain harmonics. For low and medium power applications, square wave or quasi square wave voltages may…
Three phase full bridge inverter-180 degree mode
Inverter is a device that converts dc power into ac power at desired output voltage and frequency. The output voltage waveform of an ideal inverter should be sinusoidal. However, the waveform of practical inverter are non sinusoidal and contain certain harmonics. For low and medium power applications, square wave or quasi square wave voltages may…
Single phase full bridge inverter
Inverter is a device that converts dc power into ac power at desired output voltage and frequency.The output voltage waveform of an ideal inverter should be sinusoidal. However, the waveform of practical inverter are non sinusoidal and contain certain harmonics. For low and medium power applications, square wave or quasi square wave voltages may be…
Single phase half bridge inverter
Inverter is a device that converts dc power into ac power at desired output voltage and frequency.The output voltage waveform of an ideal inverter should be sinusoidal. However, the waveform of practical inverter are non sinusoidal and contain certain harmonics. For low and medium power applications, square wave or quasi square wave voltages may be…
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