This is an excellent DIY Homemade Adjustable Power Supply Voltage And Current 0-30 Volts / 0-3 Amps. This is good laboratory power supply for beginners that has many features like voltage and current adjustment, temperture controlled fan that you can adjust the temperature when the fan will start, you can set the upper voltage limit and current limit. This power supply is simple to make specially when I provide you all the necesary files to make it like the schematic and pcb.
Link to schematic and pcb : [ Ссылка ]


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