PWM LED Ramping Circuit (Slow Bright, Slow Fade) make LED light go bright slowly and with not sudden ON/OFF This circuit is good for signal, decoration and for soft light. It uses 2× IC 555, LM393, 2N7000 MOSFET for smooth change. The circuit works best with 3 to 12V power with 6V is best. Circuit […]
LED and Lamps
Home » LED and Lamps »
Automatic Night Lamp Circuit with Photocell
Automatic night lamp use photocell to check light or dark..When dark the lamp is ON. When light the lamp goes OFF. It is good for street, garden and security lights. Parts used in circuits are LDR (ORP12), op-amp (uA741), relay which controls the AC lamp. Low light makes relay ON and lamp ON. This Automatic […]
Different Types of LEDs: A Comprehensive Guide
LED is small light. It uses less power and gives more bright. There are many type LEDs like normal, high power, RGB, SMD. Each type are used in different place like TV, torch, display and decoration. Today LED is very important in human life. Working Principle of LEDs: LED work on semiconductor principle. Inside LED […]
Simple LED Alert for Telephone Off-Hook Detection Circuit
This Simple LED Alert for Telephone Off-Hook Detection Circuit shows when phone is in use by turning ON the LED. It checks voltage change when handset is lifted means off-hook. Circuit is good for old phones with no light alert. It is very useful for shared phones and stops call interruptions. Circuit runs on simple […]
12V Battery Powered Fluorescent Lamp Driver Circuit
Fluorescent lamp need high voltage AC to start and keep glowing. This 12V Battery Powered Fluorescent Lamp Driver Circuit uses 12V battery to run fluorescent lamp. It change low voltage DC from battery to high voltage AC for the tube. It is good for battery device and emergency light. Circuit has oscillator, MOSFET switch and […]
Simple Boost Converter LED Torch Circuit using IC MAX660
Simple Boost Converter LED Torch Circuit using IC MAX660 is small but useful light tool. This project use MAX660 chip to make LED torch work well. MAX660 boost 3V battery to higher voltage and can light many LEDs. It is good for battery devices needing more voltage and with no inductor needed. Circuit design also […]