simple Fire Alarm System Wiring

Learn how to wire a simple fire alarm system with smoke detectors, a manual call point, a control panel, and an alarm siren for basic home or office fire protection.

0-30V 0-10A Variable Power Supply

Learn everything about the 0-30V 0-10A variable power supply. Adjustable voltage and current explained, features, setup, applications, and safety tips for electronics projects.

1.5V 220 Volt Inverter Mobile Phone Charger

Learn how to build a 1v5 220 Volt inverter using an old mobile phone charger. Step-by-step guide, circuit diagram, safety tips, and applications for DIY electronics projects.

3 Step LED Dimmer Circuit

Learn how to make a 3-step LED dimmer circuit to adjust LED brightness in three levels. Step-by-step guide, circuit diagram, components list, and safety tips included.

3.7V Battery Charger Circuit 1s-2s TL431 auto off

Build a 3.7V battery charger circuit 1S – 2S using TL431 for high-precision auto cut-off. Step-by-step guide, schematic, components, working principle, and safety tips included.

3.7V Lithium Battery Charge Indicator Circuit

Build a 3v7 lithium battery charge low & full indicator circuit to monitor battery status with LED indicators. Complete guide with circuit diagram, components, working principle, and troubleshooting tips.

3.7V volt battery level indicator diagram

Build a 3.7V battery level indicator circuit to monitor your lithium battery with LED indicators. Step-by-step guide, circuit diagram, components, working principle, and troubleshooting tips.

12V and 24V Battery Charger

Learn how to build a 12 Volt and 24 Volt battery charger with step-by-step circuit diagrams, components, working principle, safety tips, and troubleshooting guide for automotive and solar batteries.

12V Battery Level Indicator With BC547

Learn how to build a 12 Volt battery level indicator using a BC547 transistor to monitor battery voltage with LEDs. Complete guide with circuit diagram, components, working principle, and troubleshooting tips.

12V 220V 555 Timer IC 3000W Pure sine wave Inverter

Build a 12V to 220V 3000W pure sine wave inverter using a 555 Timer IC. Complete guide with circuit diagram, components, working principle, assembly, and troubleshooting for high-power applications.

12V Battery to 220V AC Power Inverter DIY

Learn how to build a 12V battery to 220V AC inverter at home. Step-by-step DIY guide with circuit diagram, components, working principle, applications, and troubleshooting tips for safe power conversion.

12V DC to 220V AC Inverter 3000W Pure Sine Wave

Build a 12V DC to 220V AC inverter with 3000W pure sine wave output. Complete guide with components, circuit diagram, working principle, assembly, and troubleshooting for high-power applications.

12V to 220V square wave Inverter CD4047 50-60HZ

Build a 12V to 220V square wave inverter using CD4047 IC with adjustable 50–60Hz frequency. Complete DIY guide with circuit diagram, components, working principle, and troubleshooting tips.

40V 20A Voltage Regulator LM338T Power Supply

Build a 40V 20A adjustable power supply using the LM338T voltage regulator. Complete guide with circuit diagram, components, working principle, assembly, and safety tips for high-current applications.

220V AC Fan Regulator Dimmer Circuit

Build a 220V AC fan regulator dimmer circuit to adjust fan speed smoothly. Complete DIY guide with circuit diagram, components, working principle, and safety tips for household ceiling or table fans.

Adjustable Constant Current Power Supply

Build an adjustable constant current power supply to safely drive LEDs, batteries, or electronic circuits. Complete DIY guide with circuit diagram, components, working principle, assembly, and troubleshooting.

Adjustable Flip Flop LED Flasher CD4047 Square Wave Oscillator

Build an adjustable flip-flop LED flasher using a CD4047 IC as a square wave oscillator. Complete DIY guide with circuit diagram, components, working principle, assembly steps, and troubleshooting tips.

Adjustable Power Supply 35V - 7.5A Using Single Active Component

Build a 35V 7.5A adjustable power supply using a single active component. Complete DIY guide with circuit diagram, components, working principle, assembly steps, and safety precautions for high-current projects.

Adjustable Power Supply MOSFET Control 0-220V

Build a 0-220V adjustable power supply without a transformer using MOSFET control. Complete DIY guide with circuit diagram, components, working principle, assembly steps, and safety precautions for AC load control.

Adjustable Voltage Power Supply 40V - 20A High Power

Build a high-power adjustable voltage power supply, 40V 20A, for lab and DIY projects. Complete guide with circuit diagram, components, working principle, assembly, testing, and safety precautions.

All-in-One Battery Charger Circuit

Build an all-in-one battery charger circuit capable of charging multiple battery types safely. Complete guide with circuit diagram, components, working principle, assembly steps, and safety precautions.

Alternative Heating Method During Natural Gas Crisis Induction Heater

Explore alternative heating methods during a natural gas crisis using an induction heater system. Learn working principles, applications, benefits, and energy efficiency for sustainable heating solutions.

Amazing VU-Meter CD4017 Unusual Circuit

Build an amazing VU-Meter using CD4017 with LEDs for audio level indication. Learn the circuit diagram, components, working principle, assembly, and testing for this unusual audio project.

Auto Cut-Off 12V Battery Charger Circuit

Build a 12V battery charger with auto cut-off for safe charging. Learn the circuit diagram, components, working principle, assembly steps, and protection features to prevent overcharging.

Automatic Day Night Light Switch

Build an automatic day-night light switch that turns lights ON at night and OFF during the day. Learn the circuit diagram, components, working principle, assembly steps, and applications for smart lighting.

Automatic Street Lamp LM393

Build an automatic street lamp using the LM393 comparator to turn the lights ON at night and OFF during the day. Learn the circuit diagram, components, working principle, assembly, and applications.