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在那些使用电池的电子设备中,直接由电池使设备工作并非总是适合的或行得通的.这可能是因为电池电压要按不同场合如在飞船中的需要来固定,或是因为所需电压的电池太费,不便于使用,或得不到足够的固定输出.因此有必要使用直流到直流变换器将电池电压变换成设备所需要的工作电压.倘若不需要准确的调整电压,那么电源电压一般应适当的固定,不随电池电压变化,并且效率要高,以减少工作费用和较大功率时必需耗散的总热量.
In those battery-operated electronic devices, it is not always suitable or feasible to operate the device directly from the battery, probably because the battery voltage is fixed as needed on different occasions, for example in a spacecraft, or because the required The voltage of the battery is too expensive, inconvenient to use, or not enough fixed output, it is necessary to use the DC to DC converter to convert the battery voltage required for the operation of the device voltage.If you do not need to accurately adjust the voltage, then the power supply The voltage should generally be properly fixed, not with the battery voltage changes, and higher efficiency, in order to reduce the cost of work and more power must dissipate the total heat.