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New Circuit Projects

Simple 4 Watt LED Driver Circuit Using IC 338

Last Updated on January 3, 2024 by Swagatam 23 Comments

4 watt led driver circuit

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 […]

Filed Under: Lamps and Lights Tagged With: 338, Driver, LED, Simple, Watt

10 LED Simple Roulette Wheel Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 20 Comments

10ledelectronicroulettewheelschematics252Cimage

A very simple 10 LED roulette wheel circuit is shown here. pressing the button starts the LEDs in a rotational motion (sequencing) at full swing initially, and gradually slows down, until it stops to a particular, randomly selected LED. The randomness of the selection depends upon the time for which the push remains switched ON […]

Filed Under: Games and Sports Projects Tagged With: LED, Roulette, Simple, Wheel

Simple LED Music Level Indicator Circuit

Last Updated on December 3, 2024 by Swagatam 15 Comments

LEDMusicLightCircuitDiagram252CImage

An LED music level indicator is a circuit that will respond to the connected music levels and illuminate a chain of LEDs sequentially in a push-pull switching manner, in accordance with the varying music intensity. Since the illumination level of the switching LED chain appear to extend forward and backward proportionately in response to the […]

Filed Under: Indicator Circuits Tagged With: Indicator, LED, Level, Music, Simple

Infrared (IR) LED Flood Light Circuit

Last Updated on December 3, 2024 by Swagatam 23 Comments

IRLEDFloodLightCircuitDiagram252CImage

An infrared flood light is a circuit that creates an illumination over a wide range of area using infrared frequency. This infrared illuminated area can be perfectly visualized through specialized infrared gasses and IR cameras, but can be totally invisible to naked eye. In this post we study a simple infra red based flood light […]

Filed Under: Lamps and Lights Tagged With: Flood, Infrared, IR, LED, Light

One Transistor Automatic Battery Charger Circuit

Last Updated on November 30, 2024 by Swagatam 104 Comments

simplestbatterychargercircuit

This one transistor cheap battery charger circuit is designed to automatically switch OFF the supply to the battery as soon as the battery has reached its full charge level. A very simple single transistor automatic battery charger circuit is I have I have explained in this article, which uses just a single transistor for the […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Transistor

LED Strobe Light Circuit with Chasing, Flashing Effects

Last Updated on November 30, 2024 by Swagatam 36 Comments

simplestrobelightcircuit

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 […]

Filed Under: Lamps and Lights Tagged With: Chasing, Effects, Flashing, LED, Light, Strobe

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