Poor Man's Lab PSU

thingiverse

This is my makeshift dual lab power supply. Component list: Display: A low-cost DC voltmeter and ammeter with a blue-red LED panel gauge - available on Aliexpress for $5.99. DC Converter: A high-efficiency, adjustable output DC converter module using the LM2596 chip, perfect for stepping down DC voltages from 4-40V to 1.3-12V. This is an alternative to the onboard potentiometer on the DC converter: a linear taper rotary volume control B-type potentiometer available on Aliexpress for $2.59. Terminals: A set of five audio speaker push-in jack connectors with spring-loaded terminals, ideal for connecting cables and wires securely - available on Aliexpress for $1.99. Power IN Jack: A 5mm power plug and socket combo with a secure snap-on mechanism, designed for use in panel mounts or DC power supplies - available on Aliexpress for $1.49. And of course, a reliable DC power adapter to supply the necessary voltage and current: a universal input AC-DC converter that converts 110-220V AC to 12V, 15V, 16V, 18V, 19V, or 20V DC - available on Aliexpress for $4.99. Input: The power supply accepts 4-30V DC inputs and delivers dual outputs of 1.25-30V at a maximum current of 3A. Cost: This DIY project is extremely affordable, with minimal expenses required to build the entire setup!