Power Supplies
Posted under Energy, Power Source
These days, almost every home have electronic devices, and within those devices lays down power supplies as the main converter from power lines into low voltage power that will be use as energy or fuel.
Everything from televisions to computers, copy machines, portable phones, electric-motor speed controls, and so forth virtually anything that has an integrated circuit, digital display, or electronic control function uses them. Even portable electronic products that operate with batteries will usually have an external power supply to recharge their batteries.
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Harmonics and Voltage Notching
Posted under Power Source
As we have seen, diode-rectifiers draw currents in bursts and those bursts can be described in terms of their THD. One effect of these current surges is that there will be a voltage drop in the connecting lines during those surges, which results in momentary drops in the voltage that reaches the load.
Consider the circuit in which a sinusoidal voltage source sends current through a line to a load. To keep everything as simple as possible, the line impedance is modeled as just having resistance with no reactive component.
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Harmonic Distortion
Posted under Energy
The basic components of resistance, inductance, and capacitance, when driven by sinusoidal voltage and current sources, respond with smooth sinusoidal currents and voltages of the same frequency throughout the circuit.
Electronic devices loads tend to draw currents in large pulses. Those nonlinear “gulps” of current can cause a surprising number of very serious problems ranging from blown circuit breakers to computer malfunctions, transformer failures, and even fires caused by overloaded neutral lines in three-phase wiring systems in buildings.
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Power Quality
Posted under Energy, Power Source
The energy or power demand that kept on increasing, required more alternative energy to be discover. The quality of those power also important, in order to kept the safety of people as last chain of usage, also to preserve the energy itself.
As an example is electric stability that later will impact on the ages of your electronic devices. The balance within a set of current and voltage irregularities which are lumped together and referred to as power quality issues. Voltages that rise above, or fall below, acceptable levels, and do so for more than a few seconds, are referred to as undervoltages and overvoltages. Read more
Energy and engineering
Posted under Energy
This is the time for engineer, these days almost everything are manufactured in massive production factory, with one simple purpose which is to fulfill demands of the people. With those fact, energy itself became the main highlight and first discussion around the world.
Person could have energy by eating some food, while our daily activities required energy that are build by engineer or just took advantage from the earth have given to us. But the fact says that energy exploration by human have reach into concerning level, more and more people just draining the energy without thinking the future.
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