The utility model relates to a phase locked type DC voltage stabilizing power supply, belonging to the technical field of power supply. It is characterized by that the reference signal and sampling signal are high frequency signals, and the phase of the two high frequency signal is compared with the error comparison part, and the output voltage is adjusted by adjusting the tube. It eliminates the DC power supply with a variety of adverse effects of voltage was the reference signal; at the same time there is no DC amplifier zero drift; change the output voltage does not change the sampling rate, does not affect the performance of regulated power supply. The circuit adopts digital integrated circuit, the production debugging is simple, and each performance indicator is superior to the current DC stabilized voltage power supply.
【技术实现步骤摘要】
【技术保护点】
一种锁相式直流稳压电源,由电压-频率转换器(2)和取样电阻(1)、频率发生器(3)、相位比较器(4)、滤波电路、放大电路、调整管、整流滤波电路和过流保护电路组成;其特征在于电压-频率转换器(2)的输入端联接取样电阻(1),输出端联接相位比较器(4);频率发生器(3)输出端联接相位比较器(4),相位比较器(4)的第一输入端(A)联接电压-频率转换器(2),第二输入端(B)联接频率发生器(3),输出端联接滤波器(5)。
【技术特征摘要】
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