The design AT89S52 microcontroller as the core control chip, digital DC power supply features program. Design uses 8-bit precision DA converter DAC0832, LM350 three-terminal adjustable regulator and pose a UA741 op-amp voltage source to achieve the output voltage range of 0V ~+9.9 V, 0.1V step voltage regulator NC power, the maximum ripple is only 10mV, with high precision and stability.

shukongdianyayuan.doc

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