12V SMPS driver change big AC power from 110V or 220V into small 12V DC. Circuit is good for LED strip light. In this DIY we make cheap and strong LED driver. It can power full 12V LED strip with 100 or 200 LEDs. Important points to follow: Circuit uses 230V AC direct which is […]
LED and Lamps
Simple Flasher Circuit using LED and LDR
LED and LDR are used to make this easy and Simple Flasher Circuit. LDR changes resistance when light changes and this control LED blink. There is no need for big chips or transistors but still the LED blink happens. It uses simple parts like resistor, capacitor and special light sensor called LDR. Circuit Working: Parts […]
Automatic Staircase Light Circuit
Automatic Staircase Light Circuit turn ON light when someone uses stairs. After some time it turn OFF by itself automatically. It help keep home safe and saves electricity. Circuit Introduction: Regular stair lights: Need to turn ON/OFF by hand using switches at top and bottom. Sometimes people forget to turn OFF, so energy gets wasted. […]
Motorcycle LED Turn Signal Indicator Circuit
In this post for Motorcycle LED Turn Signal Indicator Circuit the LED flashes with chasing effect, instead of old bulb type. IC 555 works like oscillator and gives flashing signal. Circuit Working: Parts List: Category Description Quantity Resistors 390Ω 1/4 watt 5 10k 1/4 watt 5 4.7k 1/4 watt 3 Capacitors Electrolytic 100μF 25V 2 […]
Simple Fade On Fade Off LED Circuit
Simple Fade On Fade Off LED Circuit makes LED turn ON and OFF slowly, but not suddenly. It is also called a dimming circuit with fade effect. It looks smooth and nice to eyes. Circuit Working: Parts List: Category Description Quantity Resistors 100k 1/4 watt 3 1Ω 0.5W (or 8.2Ω depending on LED color) 1 […]
How to Illuminate 18 LEDs from a 3.7V Battery
In this post for How to Illuminate 18 LEDs from a 3.7V Battery we need to power 18 LEDs with 3.7V battery like a small light party! To light all LEDs well we need smart plan. We have to make small LED groups and connect in clever way. Use series in line and parallel in […]