Posted on August 13th, 2010 in Power Supply
In this modern scenario, computers have become one of the most important parts of our daily life as these are employed for hundreds of purposes including saving sensitive data, conducting online banking and purchasing items. In order to make your PC workable, the PC requires electric current. When the power source is available, your PC gets a continuous voltage flow to work properly. But, in a situation where power source is not available, uninterruptible power supplies are an ideal option to avoid loss of data and even damage to your computer. Hence uninterruptible powers supplies have been become important parts of all electronic devices. In the UK, uninterruptible power supplies have come in a variety… Read More…
Choosing between transformer-based or transformerless uninterruptible power supplies may not be a simple ‘either/or’ decision, particularly above 10kVA. Both technologies have their place in today’s power protection scenarios but the key differences between them are: physical size, efficiency, noise output and the levels of input harmonic distortion that they generate. Both uninterruptible power supply designs produce a tightly regulated source of uninterrupted power but they differ in the way they generate the dc voltage required by their inverters and their output stages. Transformer-based Uninterruptible Power Supplies: until the early 1990s, the only design of online uninterruptible power supply was transformer-based. Nowadays, the design is still available but generally in larger sizes for UPS from eight… 
Uninterruptible power supply is necessary to prevent computer hardware as well as software from damage. It is also necessary to let the user work with complete concentration without any interruption. Today it has become an inevitable part of the computer system. This is composed of various components like rectifier, charger, battery, inverter, static switch, maintenance bypass, external maintenance bypass etc. All these components perform different functions and fulfill the requirement of power supply to the computer system or other electronic devices which require immediate power supply. Rectifier is the component of the UPS which converts the ac (alternating current) supply to dc (direct current) and provide charging current for battery as well as it also… 
An uninterruptible power supply or continuous power supply is a device which provides a continuous supply of electric power to all the connected equipment by supplying power from a separate source when utility power is not available. UPS differs from an auxiliary power supply as auxiliary power supply does not provide instant protection from a momentary power interruption. Basically there are three types of UPS, off-line, line-interactive and on-line. An off-line UPS remains idle until a power failure occurs and as soon as the power failure occurs it instantaneously switches from utility power to its own power source. A line-interactive UPS also rely on main AC power and when power fails, the bi-directional unit switches to inverter mode to… 