Abstract

Because of the advantages of high stability, small ripple, linear power supply is suitable to high stability requirements fields. The working principle and deficiencies of the existing DC linear power supply is analyzed. And the implementation of a new linear power supply with tunable voltages is put forward. In the premise of no change of the output voltage circuit feedback dynamic performance, output voltage can be adjustable. The power has the characteristics of over-current protection for output and lower error caused by temperature drift, time drift, component parameter tolerance and lower cost, higher output resolution, etc.

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