The system handles the charging current pulses of several amperes during vehicle impact. The circuit shown here is a typical lithium-ion cell charging circuit, which is called from an alternating current power source, and uses a boost converter for charging the cell. Several safety systems have been developed using rechargeable batteries or other secondary cells for this purpose. Cars also need to be safer from the reactive loads if they are used to handle high-power pulses from large generators. High-power pulses of energy generated by vehicles such as the railgun are rare, but safer power-storing devices that can handle high current spikes during impacts are in demand for structural damage control on bridges, tunnels, and other high-structural-energy-bearing devices. Thus, in power electronics, a power source (AC or DC) is switched by a high-power transistor or SCR or MOSFET or GTO, which may cause overheating and damage when switching at high currents is not possible with temperature protection circuits. For example, an AC generator with power ranging from hundreds of kilowatts to tens of megawatts could be used to supply a load (vehicle, home, industrial) that requires a constant power throughout the day. Converters in these applications may be either DC/DC or DC/AC. Multiple converters (inverters) are involved to convert the AC wave from one power level to another one.

For instance, renewable energy and alternative energy sources such as wind, solar, and fuel cell generators are common. Some applications of power electronics are for large-scale, low-cost power generation. Lotus Notes 64 Bit Client Download 'LINK'

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