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A high-precision digital control DC power supply based on singlechip STC89C52, A/D converter AD7705, D/A converter DAC7512 and three terminal adjustable regulator LM317 is designed and realized, which uses MCU as the center, and adopts 12 DAC DA7512 to realize digital control and 16 ADC AD7705 and LCD to the measurement and display of output voltage. The voltage adjustment range of this system is...
This paper presents a design method of DC source based on AT89S52, the reference voltage of LM336 is divided into 256 by DAC0832, the regulation of output voltage is achieved by changing the input of DAC0832, and the output voltage is magnified by the amplifying circuitry and LM317. For the stabilization, ADC0809 output is fed back to the AT89S52.
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