If we looked at an AC supply, with a step down transformer which reduces the voltage, the electrons are flowing forward and backwards. So, the load experiences a sine wave. The load could be anything from a resistor, a lamp, a motor etc. If we inserted a diode, the diode will only allow current to… Continue reading Half Wave Rectifier
Month: August 2022
Full Wave Bridge Rectifier
Learn about the full wave bridge rectifier, the half wave rectifier the full wave rectifier, center tapped transformers, diodes, load, oscilloscope, waveform, DC, AC, voltage current, capacitors, bleeder resistor to learn how full wave bridge rectifiers work. This is a full wave bridge rectifier. It’s used to power our electronic circuits, so we’re going to… Continue reading Full Wave Bridge Rectifier
Variable Frequency Drives
Learn the basics of Variable Frequency drives- how they work, why they are used and their importance along with worked examples. Scroll down to the bottom to watch the Youtube tutorial. Remember electricity is dangerous and can be fatal. You should be qualified and competent to carry out any electrical work. If you work in… Continue reading Variable Frequency Drives
How Inverters Work
How inverters work. In this article we take a look at how an inverter works to convert direct current (DC) into Alternating current (AC). Inverters are used within Photovoltaic arrays to provide AC power for use in homes and buildings. They are also integrated into Variable Frequency Drives (VFD) to achieve precise control of HVAC… Continue reading How Inverters Work
Power Inverters Explained
Learn the basic working principle of power inverters, how they work, what they are used for, where we use them and their importance along with worked examples. Remember electricity is dangerous and can be fatal. You should be qualified and competent to carry out any electrical work. What Is An Inverter? A typical inverter looks… Continue reading Power Inverters Explained
External and Internal Faults in Transformer
t is essential to protect high capacity transformers against external and internal electrical faults. External Faults in Power Transformer External Short Circuit of Power Transformer The short – circuit may occur in two or three phases of electrical power system. The level of fault current is always high enough. It depends upon the voltage which… Continue reading External and Internal Faults in Transformer
SF6 Gas or Sulfur Hexafluoride Gas Properties
History of SF6 SF6 or sulfur hexafluoride gas molecules are combined by one sulfur and six fluorine atoms. This gas was first realized in the year 1900 in the laboratories of the Faculte de Pharmacie de, in Paris. In the year of 1937, General Electrical Company first realized that SF6 gas could be used as… Continue reading SF6 Gas or Sulfur Hexafluoride Gas Properties
Electrical Switchgear Protection
Definition of Switchgear A switchgear is a generic term which includes all the switching devices associated with power system protection. It also includes all devices associated with control, metering and regulating of electrical power systems. Assembly of such devices in a logical manner forms switchgear. In other words systems used for switching, controlling and protecting… Continue reading Electrical Switchgear Protection
Low Voltage Switchgear
Generally electrical switchgear rated upto 1KV is termed as low voltage switchgear. The term LV Switchgear includes low voltage circuit breakers, switches, off load electrical isolators, HRC fuses, earth leakage circuit breaker, miniature circuit breakers (MCB) and molded case circuit breakers (MCCB) etc i.e. all the accessories required to protect the LV system. The most… Continue reading Low Voltage Switchgear
Protection of Lines or Feeder
As the length of electrical power transmission line is generally long enough and it runs through open atmosphere, the probability of occurring fault in electrical power transmission line is much higher than that of electrical power transformers and alternators. That is why a transmission line requires much more protective schemes than a transformer and an… Continue reading Protection of Lines or Feeder