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  ⚡ DIY Auto Voltage Circuit (3V to 150V) – Build Your Own Adjustable Voltage Regulator Need a circuit that can automatically adjust voltage from 3V to 150V ? Building an auto voltage circuit is a useful project, especially for electronics enthusiasts and hobbyists who work with a wide range of devices requiring different voltage levels. Let’s dive into how you can create this circuit! 📦 Materials Needed: LM2596 buck converter (adjustable voltage regulator) MOSFET (e.g., IRF540N) Voltage sensor module (e.g., ZMPT101B for AC voltage sensing) Op-amp (e.g., LM324 for feedback control) Resistors, capacitors, and diodes (for filtering and protection) Transformer (to step down AC voltage to DC, if needed) Microcontroller (optional, for automation and better control) Heat sink (for temperature management) DC power source (for powering the circuit) ⚙️ Steps to Build: Step 1: Power Supply Setup If you’re working with AC input, use a transforme...