Robo India in this tutorial explains how to make a timer circuit using 555 timer IC.
1. Introduction:
555 timer IC is used in this tutorial to make timer circuit. 555 timer IC is widely used timer IC.
Download 555 Timer ICs Data Sheet here.
1.2 List of parts
Following parts will be used to perform this circuit.
| S.No. | Item | Quantity |
| 1. | Basics of Electronics Kit’s Platform(Without Transformer) | 1 |
| 2. | 9V Battery with connector | 1 |
| 3. | Indicator LED (Red, Green) | 2 |
| 4. | 1 K Resistance | 1 |
| 5. | Jumper Wires male to male | 10 |
| 6. | 10K Potentio meter | 1 |
| 7. | 555 Timer IC | 1 |
| 8. | 1K Resistance | 2 |
| 9. | 470 uF Capacitor | 1 |
2. Circuit
Make the following circuit. Two LEDs connected to Pin 3 of 555 timer IC blinks for different duration and different timings. The timing can be controlled through the 10K pot. Additionally timing and frequency can be changed with changing capacitor. You may try other values of capacitors.
Here in the circuit diagram 9V battery is used, You may use DC power supply with help of transformer. Click on image to zoom.
3. Resources:
Rectifier Circuit if you want you use transformer instead of battery.
Download 555 Timer ICs datasheet here.
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