This post talks about Building an Auto Street Light Circuit using IC 741 and Transistor, as it turns ON at night and OFF at day. Furthermore, this circuit is simple and saves energy and it uses relay to control light, LDR to sense light, BC547 transistor drives relay and IC 741 works as a comparator. […]
LED and Lamps
Practical Emergency Tube Light Circuit
Practical Emergency Tube Light Circuit gives light when power goes OFF, as this project uses few parts to make emergency light work well. Circuits min parts are step-down transformer, pulse switch circuit and tube light, in addition, this tutorial teaches us how the circuit works and how to build it. Circuit Working: Parts List: Components […]
Voltage Level Monitoring Circuit using IC LM339
Voltage Level Monitoring Circuit using IC LM339 very important in modern electronics, as it helps system work correct, so to see voltage in real time we need to use voltage level readout circuit. Also, this circuit uses LM339 comparator IC for accurate voltage check and stable reading. Main parts are LEDs that show voltage level […]
Simple White LED Driver Circuit using TPS61161A
White LEDs are very common in lighting applications because we use them in electronics, car displays and home lighting due to their low power consumption, long lifespan and high efficiency. However, to ensure long life and proper performance, we must manage their power properly. Also, IC TPS61161A is special chip which is the LED driver […]
Designing a Simple 7W LED Bulb Circuit
LED lights last long and use less power so more people like them now. Furthermore, this article for Designing a Simple 7W LED Bulb Circuit shows how to make and use a 7W LED bulb circuit. Also, parts needed for this circuit are 230V AC power, MOV, capacitors, resistors, bridge rectifiers, Zener diodes. So, be […]
Simple Adjustable Brightness Control Circuit for LEDs
LEDs (light-emitting diodes) are used in many applications because they are durable, efficient and versatile also they are used in decoration and signaling and adjusting LED brightness is important in such applications. This Simple Adjustable Brightness Control Circuit for LEDs uses BC547 NPN transistor, resistors, one preset (variable resistor) and a white LED to change […]