Proximity Sensor Circuit

Build a simple proximity sensor circuit using a BC547 transistor to detect nearby objects. Ideal for DIY electronics, hobby projects, and automation experiments.

Reed Switch Magnetic Sensor

Build a magnetic sensor using a reed switch. Detect magnets, doors, or proximity in DIY projects. Easy assembly with BC547 transistor for switching output.

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.

Remote Control Tester using IR Receiver

Build a remote control tester using IR receiver and BC557 transistor. Check remote signals instantly with LED or buzzer output for DIY electronics projects.

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.

Running LED Chaser Light

Build a running LED chaser light using BC547 transistors. Create sequential LED effects for decorations, indicators, or DIY electronics projects easily.

SCR Battery Charger

Build an SCR battery charger using BT151 thyristor for controlled DC charging. Suitable for 12V/24V batteries in DIY electronics and hobby projects.

Short circuit protection using Relay

Protect electronic circuits from short circuits using a relay-based protection system. Automatically disconnects the load when overcurrent is detected, ensuring safety.

simple and stable metal Detector

Build a simple and stable metal detector for hobby electronics. Detect metals easily using a compact, low-voltage, and beginner-friendly circuit with an LED or buzzer output.

Simple Ultrasonic Humidifier

Build a simple ultrasonic humidifier using a 2SC6144 transistor for mist generation. Ideal for DIY electronics projects, home use, and small-scale humidification.

Hair Dryer Wiring Connection

Learn the single-phase wiring connection for a hair dryer. Safe, step-by-step guide to connect live, neutral, and earth for proper operation and protection.

Single Push Button on-off Switch

Build a simple single push button on-off switch using IRFZ44N MOSFET and BC557 transistor. Ideal for controlling DC loads in DIY electronics projects.

single transistor mosquito

Build a simple mosquito repeller using a single BC547C transistor. Generates high-frequency sound to repel mosquitoes, perfect for DIY electronics projects.

Smart 18650 li-ion Charger BC547

Build a smart 18650 Li-ion battery charger using BC547 transistor. Features automatic cut-off, LED indication, and safe low-voltage charging for DIY electronics projects.

SMD LED Tester

Build a simple SMD LED tester to check surface-mount LEDs. Easy, compact, and safe for hobby electronics and DIY LED testing projects.

Solar Panel Automatic Light

Build a solar panel automatic light using BC547 transistor. Lights turn ON at night and OFF during day, perfect for energy-saving DIY solar projects.

Solid State Relay

Build a solid-state relay (SSR) using BT136 TRIAC. Controls AC loads without mechanical contacts, ideal for DIY electronics, automation, and hobby projects.

2 Switch with Battery Wiring

Learn 2 switch with battery wiring in series and parallel modes. Control loads safely using simple connections for lights, motors, or DC circuits.

Transformerless 12v Power Supply

Build a 12V symmetrical power supply circuit to provide +12V, -12V, and ground output for audio amplifiers, op-amps, and other dual-voltage electronics projects.

Adjustable Power Supply IGBT

Build an adjustable power supply using an IGBT with step-by-step circuit, installation guide, testing, and safe operation tips for beginners and professionals.

Sound Sensitive 12v Bulb Control

Automatic 12V bulb controller that turns lights ON with loud sounds (claps, voice). Uses a microphone/amp, comparator/transistor, and relay/MOSFET for safe 12V switching.

Temperature Sensor Fan Controller Circuit

Automatically control a 12V/24V fan using a temperature sensor (LM35 / DS18B20 / NTC). Comparator or MCU drives a MOSFET/relay to switch fan based on set temperature threshold.

Power Tesla Coil

Build a transistor-based Tesla coil using a simple transistor oscillator circuit to generate high-voltage sparks for educational and DIY electronics projects.

Transistor led blinking circuit

Build a transistor-based LED blinking circuit using a few resistors and capacitors to make LEDs blink automatically, ideal for beginners and DIY projects.

Transistor LED Flasher Circuit

Build a transistor-based LED flasher circuit that makes LEDs blink automatically using an RC network, ideal for beginners and small DIY electronics projects.

Universal Battery Charger

Build a universal battery charger using a TIP3055 transistor for safe, adjustable charging of 6V–12V batteries, ideal for DIY electronics and hobby projects.