This paper designs an integrated DC regulated power supply. The design uses transformer transformer, bridge rectifier circuit for rectification, capacitor to filter the ripple voltage, and finally with adjustable resistor and three-terminal integrated regulator to achieve continuous adjustment of DC voltage between 2.5V and 25V. The digital voltage display part uses the integrated TC7107 to convert the analog signal to the digital signal and drive the digital display according to the design principle of the digital voltmeter. The voltage is displayed by LED common cathode digital tube. The stabilized power supply has the advantages of stable performance, simple structure, high precision of voltage index and convenient adjustment.
PCB 3d oblique view
Adjustable DC stabilized power supply schematic
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