This post shows a Simple Lamp Flasher Circuit using IC LM395 to flash a lamp ON and OFF LM395 IC is a strong power transistor which works like a switch. It needs only few parts and can handle high current. It has safety features like heat and current protection. Even if design is simple it […]
LED and Lamps
Building an Auto Street Light Circuit using IC 741 and Transistor
This post talks about Building an Auto Street Light Circuit using IC 741 and Transistor. It turns ON at night and OFF at day. This circuit is simple and saves energy. It uses relay to control light, LDR to sense light, BC547 transistor drives relay and IC 741 works as a comparator. It is an […]
Practical Emergency Tube Light Circuit
Practical Emergency Tube Light Circuit gives light when power goes OFF. This project uses few parts to make emergency light work well. Main parts are step-down transformer, pulse switch circuit and tube light. This tutorial teaches us how the circuit works and how to build it. Circuit Working: Parts List: Component Descriptions Quantity Resistors 680Ω […]
Simple White LED Driver Circuit using TPS61161A
White LEDs are very common now for lights. They are used in electronics, car displays and home lights because they save power, last long and work well. But for long life and best work the power must be managed well. IC TPS61161A is special chip which is the LED driver for this job. It can […]
Designing a Simple 7W LED Bulb Circuit
LED lights last long and use less power so more people like them now. This article for Designing a Simple 7W LED Bulb Circuit shows how to make and use a 7W LED bulb circuit. Parts needed for this circuit are 230V AC power, MOV, capacitors, resistors, bridge rectifiers, Zener diodes. Be careful! This circuit […]
Simple Adjustable Brightness Control Circuit for LEDs
LEDs (light-emitting diodes) are used in many things. They are strong, work well and can be used in different ways. In things like decoration or signals, changing LED brightness is important. This Simple Adjustable Brightness Control Circuit for LEDs uses BC547 NPN transistor, resistors, one preset (variable resistor) and a white LED to change brightness. […]