USB Voltage Protector Circuit

Protect your USB devices with a simple IRFZ44N MOSFET-based voltage protector circuit that prevents overvoltage, short-circuits, and device damage effectively.

Use Relay As a Switch

Learn how to use a relay as a switch to control high-voltage or high-current devices safely using low-voltage signals in DIY and electronics projects.

Variable Power Supply

Build a variable power supply using the LM317 IC to deliver an adjustable voltage safely from 1.25V to 37V, ideal for electronics projects and hobbyist applications.

Touch on-off Switch Circuit

Simple NE555-based touch on-off switch circuit for controlling LEDs and small loads with a single touch, ideal for DIY electronics projects.

Touch on-off Switch

7N80 touch on-off switch circuit toggles LEDs or relays with a fingertip, ideal for DIY electronics and home automation projects.

Touch Sensor to Light Control

Control LEDs or small lights with a fingertip using BC547 transistor touch sensor circuit, ideal for DIY electronics and home automation projects.

Touch Switch Circuit

Control LEDs or small devices with a fingertip using a 2N2222A transistor touch switch circuit, ideal for DIY electronics and home automation projects.

Transformerless Power Supply

Compact transformerless power supply circuit provides a low-current DC output for small electronics using capacitive or resistive voltage drop methods.

Transformer Using LED Tester

Test transformers quickly and safely using an LED tester circuit to check output voltage and continuity, ideal for DIY electronics and troubleshooting.

Transformerless 12v power supply

Compact transformerless 12V DC power supply provides low-current output for small electronics using a capacitor dropper or resistive method.

Transformerless Isolation Power Supply 12v Fix

Compact transformerless 12V fixed DC supply with isolation provides low-current power for small electronics safely using capacitor or resistive dropper techniques.

Transformerless LED Tester Circuit

Test LEDs safely without a transformer using a compact transformerless LED tester circuit, ideal for hobbyists and electronics enthusiasts for quick checks.

Transformerless Power Supply Wiring

Step-by-step transformerless power supply wiring guide for low-current DC output using capacitive or resistive dropper methods for LEDs and small electronics.

Variable Power Supply using LM317

A variable power supply provides adjustable voltage output for electronics testing and DIY projects, allowing safe and precise control from 1.25V up to the input voltage limit.

Variable Voltage Regulator 60v 10a

Build a high-current variable voltage regulator delivering up to 60V and 10A output, ideal for powering electronics projects, motors, and high-power DC devices safely.

Variable Power Supply using IRFZ44N

Build a high-current variable power supply using an IRFZ44N MOSFET to provide an adjustable voltage for electronics, DIY projects, and motor control applications safely.

Voltage Doubler Circuit

A voltage doubler circuit converts input voltage into nearly double using diodes and capacitors, ideal for electronics projects needing higher DC voltage.

Voltage Regulator Fix 5v

Build a reliable fixed 5V voltage regulator using 7805 (+5V) and 7905 (−5V) ICs to power electronics circuits with stable and precise DC output.

Voltage Regulator using IRFZ44N Mosfet

Build a high-current voltage regulator using an IRFZ44N MOSFET for a stable and adjustable DC output, suitable for motors, LEDs, and DIY electronics projects.

Voltage Regulator using Transistor

Build a high-current voltage regulator using transistors for a stable DC output, adjustable or fixed, suitable for motors, LEDs, and electronics projects.

vu-meter for BC547

Build a simple audio VU meter using BC547 transistors to display audio signal levels with LED indicators, ideal for DIY music and electronics projects.

water Level Indicator

Build a simple water level indicator circuit to monitor tank levels with an LED display, preventing overflow and low-level issues for home and industrial applications.

Without IC Chaser LED Relay Based Project

Build a relay-based LED chaser project without using ICs. LEDs sequentially blink using relays, providing a simple DIY electronics display for beginners and hobbyists.

Zener Diode Tester

Build a simple Zener diode tester to check Zener voltage and polarity, ensuring proper operation for DIY electronics and hobby projects.

fire alarm system wiring diagram

Learn how to wire a fire alarm system including detectors, control panel, sirens, and manual call points for reliable safety and early fire detection.

Fire Alarm System Conventional Wiring

Learn how to wire a conventional fire alarm system with detectors, manual call points, a control panel, and sirens for reliable home or office fire protection.