What makes it a hybrid?

A hybrid car has two or more on-board energy sources and most often features electric power combined with at least one other energy source. Electronically Controlled Continuously Variable Transmission technology allows management of transitioning back and forth to each energy source, and a regenerative braking system recharges the battery when the car slows.

Mild hybrid cars are defined by a primary reliance on gas engine power for
propulsion, with electric power secondary. Full hybrid cars rely on electric power for propulsion and the secondary gas engine for power and acceleration.

How does it work?

The typical hybrid utilizes a gasoline engine and an electric motor, and rechargeable batteries store the energy used by the electric motor. For a lot of vehicles these rechargeable batteries are also replaceable. The driver doesn’t have to worry about which energy source to use to maximize efficiency, since a computer system determines when to switch systems. These hybrids use less gasoline since they also use electricity as a fuel. Some future hybrids may be plug-ins, with the ability to be recharged at home. As hybrids become more common it is clear the plug-in kind we’ll be the most attractive. Despite the possibility of developing plug-ins in a wider range, most consumers are buying battery powered hybrids.

All the others.

Other hybrids have alternative fuel tanks that use traditional gasoline and another fuel, like compressed natural gas (CNG). Although not renewable, CNG is cheaper and is readily available. More similar to conventional gas engine cars, flexible fuel vehicles have a single fuel system which can run on two separate fuels like gasoline and E85, or a blended fuel. A more environmentally friendly option is removing gas engine power altogether. French manufacturer Venturi is in the process of developing a car that features two alternative fuel sources, solar photovoltaic cells and electric power.

One can say that hybrids are merely a stop gap measure for use only until a true alternative can be found. This seems certainly the case, but one needs to understand that hybrids might be around for a while as no one has settled on a clear propulsion alternative. Hybrids offer a great transitional propulsion system for any consumer.

Uninterruptible Power Supplies , or UPS, are devices that maintain a constant supply of power to any equipment connected to it. UPS equipment is used to provide power supply in the case of power failure. It is an emergency resource of power, which helps to operate electronic equipment at the time of power failure. UPS is mainly used to protect computers, telecommunication equipment and other expensive electrical equipment in which unexpected power disruption could cause injuries and serious business disruption or data loss. UPS units come in various sizes and of different watts i.e. from 200 VA to several megawatts.

Earlier UPS were used to be very expensive and it was used only in expensive computer systems and where the power supply was interrupted frequently. With reduce in price it has been more commonly used across data centers and business computers. Today communication application and critical computer demand power protection system which are extremely reliable and flexible and to meet this demand an uninterruptible power supplies proves to be the best of all the option. UPS proves to be invaluable in case of electrical disturbance and a reliable and efficient UPS will keep the computer running for few minutes after the power disruption so that one gets the time to save the data and shut down the computer. Another vital function of the UPS is to stop power anomalies such as voltage spikes, power sags, and surges from reaching the computer or any other electronic device that can cause immense damage to them. With more frequent power cuts and power disruption UPS are proving to be quite helpful and efficient.

There are four types of UPS system such as standby, online, line-interactive, and ferroresonant. Standby UPS provide protection from outages and small power spikes, and power sags. When power failure occurred, a switch is activated and power is then supplied from the battery. Online UPS provides much greater level of protection because of its superior power conditioning capabilities. In this type of UPS, A/C current is used to charge the battery and the battery supplies the A/C power by passing its D/C current through a power inverter. This type of UPS is the best choice for critical application or where high availability is required. Line-interactive UPS passes power through the noise filters and surge suppressors before going into an inverter. Inverter which is on the entire time act as a battery charger and in the case of power failure will switch to provide backup. Ferroresonant type of UPS uses a ferroresonant transformer as a power buffer to keep power supplied while the UPS switched to standby power. The energy buffer of the ferroresonant greatly reduces the chance that the protected equipment will be affected during the transfer time from the primary to secondary power sources.