Adjustable power conversion module set — clear functions and controlled adjustment for testing, prototyping, and power conversion tasks. Key benefits Flexible, modular control: separate modules let you change how voltage and current are measured and delivered without replacing the whole system. Precise adjustment: blue potentiometer knob provides fine control; monitor output with a multimeter to reach the exact voltage you need. Persistent settings: the supply module retains the last measurement method and output state so you can resume testing quickly. Practical troubleshooting tip built in: step-down module includes an instruction to reset the potentiometer if output equals input, avoiding confusion during setup. What each module does (simple instructions) Current-converter module Connect this module to your power source. Adjust the blue potentiometer knob and monitor the voltage with a multimeter until you reach the required voltage. Function: an adjustable current/conversion stage for setting output voltage/current as needed. Supply module Change how the system measures voltage (measurement method) and keep the last setpoint and output power. After setting the supply module, start the adjustable inverter module for the next stage of conversion. Adjustable inverter / voltage-regulator converter module Acts as the adjustable inverter and adjustable voltage regulator-converter. Use it together with the supply and current-converter modules for controlled conversion. Includes converter accessories for integration. Step-down (buck) power module If the output voltage reads the same as the input voltage, turn the potentiometer counterclockwise more than 15 full turns to reset the control, then readjust. Function: adjustable step-down power conversion module for lowering voltage as required. Important attributes Function: modular power conversion and regulation (current conversion, supply control, inverter/regulator, step-down). Control: blue potentiometer knob for fine adjustment; designed to be used with a multimeter for verification. Compatibility: intended for integration with standard power sources and multimeters; designed to work together as a modular system. Performance behavior: modules retain last measurement/mode on the supply stage; step-down module includes a reset procedure when input/output coincide. Accessories: includes converter accessories for the inverter/regulator stage. Three practical use scenarios Electronics bench testing and prototyping: quickly dial in voltages for circuit prototypes, verify output with a multimeter, and preserve settings between tests. Power conversion for small devices: convert or step down a power source to feed control boards, sensors, LEDs, or other low-power modules while adjusting current and voltage precisely. Educational labs and demonstrations: use the modular stages to teach how supply, inversion, regulation, and step-down conversion interact; the retain-last-setting behavior simplifies repeated demonstrations. Safety and setup tips Always monitor output voltage with a multimeter while adjusting the potentiometer. Power down before rewiring modules. If the step-down module output equals input, follow the instruction to turn the potentiometer counterclockwise more than 15 turns before re-adjusting. Start by setting the supply module (retain mode), then proceed to the adjustable inverter/regulator as described. This set provides modular, adjustable control of voltage and current for testing, prototyping, and small-scale conversion tasks while preserving last settings and offering simple reset guidance for the step-down stage.