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使用电池供电的电路常遇到的问题,是要求有适当稳定度的电源.大多数市售的稳压器芯片的输入—输出电压差最小为2.5V.使用本电路时,输出可等于所要求的稳定值,直至电池电压降至高于这一值不大于0.2V为止.因此,可使用电压较低的电池并延长电池的使用寿命.本电路适用于低功率输出,而且静态电流消耗很少.输入电压可高达30V,而且元部件的要求也不严格.元件值可根据各人的要求选用.
The problem commonly encountered with battery-operated circuits is that they require a reasonably stable power supply. Most commercially available voltage regulator ICs have a minimum input-to-output voltage difference of 2.5 V. With this circuit, the output can be equal to the required Until the battery voltage drops below this value by a maximum of 0.2 V. Therefore, a lower voltage battery can be used and the battery life can be extended.This circuit is suitable for low power output with low quiescent current consumption. The input voltage can be as high as 30V, and the requirements of the components are not strict. The component value can be selected according to the requirements of each person.