This five-watt LED driver uses the IC LM338 to safely light a four-watt LED in a constant current circuit mode. As is well known, the integrated circuit LM338 is an […]
10 LED Simple Roulette Wheel Circuit
This is an example of a very basic 10 LED roulette wheel circuit. When the button is pressed, the LEDs begin to rotate (sequence) at full speed and then progressively […]
How to Generate Infrared LED Flood Light
A circuit configuration that uses infrared frequency to provide lighting over a large area is called an infrared flood lamp. Although completely undetectable to the human eye, this infrared-illuminated region […]
Li-Ion LED Driver Circuits using LT1932
The article describes how to utilize a normal Li-Ion battery with a high-efficiency 1.5 V to 4.2 V LED driver circuit to improve lighting, prolong battery backup, and lengthen battery […]
LED Sound Level Indicator Circuit
The proposed LED sound level meter will detect the sound hitting the MIC, and indicate its volume level through an array of LED, connected as a bar graph. Circuit Description […]
3 LED Battery Monitor Circuit
This battery monitor circuit can be used to monitor the charge level of a battery in 3 different steps, indicated by 3 separate LEDs. Just three LEDs are incorporated to […]