5V Voltage Regulator

Build a stable 5V DC power supply using the LM340 voltage regulator. Ideal for microcontroller circuits and small electronics projects.

12V to 5V Converter

Learn how a 5V voltage regulator circuit works, circuit diagram, applications, and how to regulate 12V or higher voltage down to stable 5V DC for electronics.

3.7V to 1.5V Converter

Learn how to convert 3.7V to 1.5V using a buck converter or voltage regulator. Ideal for low-voltage electronics like sensors, microcontrollers, or low-power LEDs.

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.

Full Wave Bridge Rectifier Project

Learn how a full-wave bridge rectifier works using 4 diodes and a transformer. Explore working principles, circuit diagrams, and practical applications.

3.7v battery level indicator circuit

A simple 3.7V battery level indicator circuit using LEDs to monitor charge status for lithium-ion batteries. Ideal for DIY electronics and portable devices.

12V Charging Indicator circuit

Design a simple 12V charging indicator circuit using LEDs and transistors to visually show battery charging and full status for automotive or solar battery systems.

5V to 1.5V Converter Circuit

Learn how to convert 5V DC to 1.5V using a simple step-down (buck) converter. Perfect for low-power electronics like sensors, LEDs, and microcontroller peripherals.

12 Volt Battery Level Indicator

Simple 12V battery level indicator using LEDs or op-amps to show charge status. Ideal for DIY battery monitoring and renewable energy applications.

12V Charging Indicator Circuit

Easily monitor your 12V battery charging status with this LED-based indicator circuit. A simple and efficient solution for battery health monitoring.

12V Negative Voltage Regulator

Learn how a 12V negative voltage regulator works. Circuit, applications, pinout, and FAQ included. Ideal for power supply stabilization in electronics projects.

5 pin relay wiring diagram

Learn the 5-pin relay wiring diagram with terminals 85, 86, 30, 87, and 87a. Step-by-step connection guide for automotive, lighting, and motor control systems.

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.

auto cut-off 12v Battery Charger

Learn a 12V auto cut-off battery charger circuit that charges safely and stops at full voltage. Includes schematic, parts, installation, and testing steps.

12v Battery Charger

Learn a 12V battery charger circuit for lead-acid or SLA batteries. Includes schematic, step-by-step wiring, safety features, and voltage/current regulation.

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 Dc motor speed control circuit

Build a 12V DC fan speed controller using BC557 PWM circuit. Adjust fan speed smoothly with the 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.

24v Voltage Regulator

Learn how to build a 24V voltage regulator using the KIA7824A IC. Provides a stable 24V DC output for electronic devices, circuits, and industrial projects.

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.

18650ma Battery charger Voltage Protector Circuit

Build a 18650 battery charger with voltage protection using TL431. Ensures safe charging, prevents overcharge, and extends battery life.

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.