Power Electronics Projects

Adjustable Voltage Regulator Project

Learn how to make an adjustable voltage regulator using LM317 or LM338. Perfect for DIY electronics projects requiring a variable DC output voltage.

5v Regulator 7805 Upgrade to 10a

Learn how to upgrade a 7805 voltage regulator to deliver up to 10A output using pass transistors or buck converters with safe installation steps.

12v DC Fan Speed Controller

Build a 12V DC fan speed controller using 555 PWM circuit. Adjust fan speed smoothly with MOSFET driver. Simple, low-cost, and efficient design.

12v to 220v Inverter

Build a simple 12V to 220V inverter circuit. Convert 12V DC from a battery to 220V AC for powering small home appliances efficiently and safely.

30v 6a Variable Power Supply

Build a 30V 6A variable power supply using LM317. Adjustable DC output with current boost via external transistors for lab, DIY, and electronics projects.

AC 240v to AC 120v Converter

Learn how to build an AC 240V to AC 120V converter using the BT150 triac. Safe, efficient, and cost-effective voltage step-down circuit for appliances.

AC Motor Speed Controller

Build an AC 220V fan speed controller using a triac and a diac. Easy, efficient, and safe circuit for adjusting ceiling or table fan speed.

Adjustable Power Supply 48v 60a

Design a high-current adjustable 48V 60A power supply using FQA6060 MOSFET for heavy loads, motor drivers, battery charging, and industrial projects.

Adjustable Voltage and current Regulator Circuit

Build an adjustable voltage and current regulator circuit using an IRFZ44N MOSFET for power supply, battery charging, and motor control applications.

auto cut off 12v Battery Charger

Design an auto cut off 12V battery charger using BC547 transistor for safe charging. Automatically disconnects when battery reaches full charge.

DC Motor Speed Controller Circuit

Control DC motor rotation direction with BC139 transistors. Build a simple bi-directional motor driver circuit for DIY robotics and electronics projects.

Convert 5v to 3-7v

Step down 5V to 3.7V using BC547 transistor. Simple voltage regulator circuit suitable for powering 3.7V devices from 5V supply safely.

Convert 12v to 5v

Step down 12V to 5V using the LM317 adjustable voltage regulator. Ideal for powering 5V devices safely with a simple resistor setup.

Convert 12v to 9v

Step down 12V to 9V using BC547 transistor. Simple linear regulator circuit suitable for powering 9V devices safely from a 12V supply.

DC Motor Control Circuit

Control DC motor speed and direction using IRFP250N MOSFET. Simple H-bridge or PWM-based circuit for reliable low to medium power motor applications.

DC Motor Forward Reverse Control

Control a DC motor’s forward, reverse, and stop functions using relays. Simple and cost-effective circuit ideal for small robotics and automation projects.

Forward Reverse Motor Control

Control DC motor direction forward and reverse using DPDT relays. Simple relay-based motor controller ideal for robotics, automation, and small motor projects.

DC Motor Speed Controller

Control DC motor speed efficiently using IRFP450PBF MOSFET. A PWM-based circuit provides smooth speed regulation for small to medium power motors.

DC Motor Speed Controller using FQA60n60

Control DC motor speed efficiently using FQA60N60 MOSFET. A PWM-based controller allows smooth and adjustable speed regulation for low to high-power motors.

DC Voltage Regulator

Regulate DC voltage efficiently using the IRF840 MOSFET. Smooth and stable output with adjustable voltage control, ideal for power supply and electronics projects.

Dc-Dc Boost Feedback

An efficient DC-DC boost converter with feedback ensures a stable and adjustable higher voltage output. Ideal for battery-powered electronics and power supply projects.

Convert AC to DC Power Supply

Convert AC mains voltage to stable DC with this DIY power supply circuit. Ideal for hobby electronics, microcontrollers, and small devices requiring a regulated DC output.

fix 3-3v Voltage Regulator

Regulate DC voltage to a stable 3.3V using the KIA78D33AF IC. Ideal for microcontrollers, sensors, and low-voltage electronics projects.

Multi-volt Transformerless Power Supply Circuit

Design a compact transformerless power supply circuit to get multiple DC voltages. Ideal for hobby electronics, small projects, and low-current applications.

Regulated adjustable Power Supply

Build a regulated adjustable power supply using LM317 IC. Provides stable, adjustable DC voltage for electronics projects, hobby circuits, and testing purposes.

Reverse Polarity Protection Circuit

Protect your circuits from accidental reverse polarity with a simple fuse-based protection circuit. Ideal for DC electronics, DIY projects, and hobby circuits.