INDEPENDENT SOURCES AND DEPENDENT SOURCES

Independent sources:

There are two types of independent sources they are

Independent Voltage source

Ideal voltage source::Load voltage is independent of Load current.

Practical voltage source:Load voltage depends on Load current.

2. Independent Current source

Ideal current source::Load current is independent of Load voltage.

Practical current source:Load current depends on Load voltage.

Dependent sources:

The voltage or current of Dependent sources depends on other circuit parameters.There are four types of Dependent sources they are

Voltage Control Voltage Source(VCVS):This means that the Voltage Source is depending on other voltage parameter available in the same circuit.
Voltage Control Current Source(VCCS):This means that the Current Source is depending on other voltage parameter available in the same circuit.
Current Control Voltage Source(CCVS):This means that the Voltage Source is depending on other Current parameter available in the same circuit.
Current Control Current Source(CCCS):This means that the Current Source is depending on the other Current parameter available in the same circuit.

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GENERATOR

GENERATOR: A Generator is a machine which converts Mechanical energy into Electrical energy.These are widely used inside the Power plants for the generation of Power. Generator In general the Generator we see in a Thermal power plant gains its mechanical energy from the Turbine connected to it and this mechanical energy is thus converted into the required Electrical energy by the Generator.I myself experienced a 15 days of internship in a Thermal power plant and the Generator was about the size of a lager hall both in its length and breadth and the output Electrical energy is thus achieved by the use of a Generator.

SWITCHING TRANSIENTS IN TRANSFORMER

Switching Transients: The word Transients is always very Scary for me but not any more hahaaa...........what about you???? Well coming to the point...why do these Switching Transients occur in a Transformer. When the switch is closed when the voltage is maximum...then the flux required by the core is zero and the available flux in the core is also zero and hence NORMAL OPERATION is sufficient When the switch is closed when the voltage is crossing zero...then the flux required by the core is maximum but here the avaliable flux in the core is zero and hence TRANSIENT OPERATION is required Here when the Transient operation takes place then the flux doubles gradually and this is known as Doubling Effect of Transformer.This Doubling Effect causes magnetic in rush current and Damage in the insulation. Using Secondary Harmonic Restraining Coil can reduce all these Drawbacks.

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