In this article I have explained an innovative way of driving more than a hundred white LEDs from a 6 volt battery. The circuit utilizes the IC 555 for driving a step up transformer, whose output is finally used for illuminating the LEDs. A special PWM configuration makes the circuit much power efficient. Main Stages […]
Archives for 2011
230 Volts Bulb String Light Circuit for Diwali and Christmas
In this article I have explained how to wire tiny 12 volt flashlight bulbs into decorative string light for decorating houses during festivals like Diwali and Christmas. What are String Lights As the name suggests a string light is a wired lamp system in which many lamps such as bulbs or LEDs are joined together […]
Sequential LED Array Light Circuit
In this article I have explained how to make a sequential LED array light circuit with an sequentially illuminating LED forming a bar graph kind of LED formation. Introduction In this article I have explained a simple method of making an incremental LED light using the IC 4017, which is rather equipped with specifications not […]
Transformerless Automatic Night Lamp Circuit
This transformerless solid-state automatic night lamp operates without using bulky transformer, and automatically switches ON some LEDs during night, and switches them OFF during day. In this post I have explained how to make a transformerless automatic darkness activated LED lamp circuit, using a couple of transistors and capacitive based power supply, eliminating the use […]
Simple 4 Watt LED Driver Circuit Using IC 338
This 4 watt LED driver is a device that will illuminate a 4 watt LED safely through a constant current circuit using the IC LM338. The IC LM338 as we know is a highly versatile device when it comes to controlling voltages and current levels. Circuit Configuration In the present design, the device is configured […]
LED Strobe Light Circuit with Chasing, Flashing Effects
The proposed LED strobe light circuit will not only flash a group of LEDs with strobe pulses, but will also create a sequentially chasing effect over the strobing LEDs. You might be quite familiar with colorful LED strobe lights, and should have seen them pretty commonly in parties and discotheques. Let’s see how we can […]