The student power supply is designed specifically for physics, chemistry, and biology group experiments in primary and secondary schools as well as universities. It safely converts 220V mains power into a stable low-voltage AC/DC power supply, which can completely replace traditional batteries. It is economical, environmentally friendly, and intuitive to operate. Knob or touch button for voltage adjustment, clear gear position, equipped with voltage/current indicator or digital display. Input output isolation, overload/short circuit dual protection, in compliance with national education industry standards. Used for physical experiments such as Ohm's Law, electric power, electromagnetic induction, etc.