It is an intriguing DIY project of an LED flasher circuit that provides a battery life of approximately one year. Subsequently, the circuit is fascinating, and it can streak an LED with a 4.5V battery or three 1.5V AAA alkaline batteries for a few days to a year or more. Meanwhile, the period from days to years relies upon battery use. For instance, a small size 1.5V battery cell will keep going for scarcely any weeks or months. Yet, a D-size battery cell will keep going for as long as a year.
Furthermore, the circuit is utilizing a CMOS 555 rendition IC. However, the CMOS 555 is a redesigned adaptation of the versatile NE555 timer IC. The uses of both the ICs are the same, yet the CMOS rendition is further developing compared to the old.
Hardware Components
The following components are required to make LED Flasher Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | CMOS IC | TLC555 | 1 |
| 2. | LED | – | 1 |
| 3. | Potentiometer | 100k | 1 |
| 4. | Resistor | 1.2M, 1K, 100R | 1, 1, 1 |
| 5. | Electrolytic Capacitor | 10uF | 1 |
| 6. | Battery | 4.5V | 1 |
For a detailed description of pinout, dimension features, and specifications download the datasheet of TLC555
LED Flasher Circuit
Working Explanation
Accordingly, the circuit operation is essential as per the circuit schematics and utilizes scarcely any outer parts with a TLC555 IC. The other types of IC referenced above will likewise work here. Meanwhile, the 100K variable resistor operates to change the flashing pace of the LED. Moreover, a 100 Ohms current restricting resistor is utilized with the LED. Expanding this current limiting resistor to 1K will boost the battery life remarkably; however, the LED’s brightness will decline. The working voltage of the circuit is 4.5 to 5 volts DC.
Applications and Uses
Following are the applications of LED Flasher
- Knight rider LED lights
- Home decoration
- Party or Special event decoration
- Shop gateways
