Dual LED Flasher
Here is a simple circuit that flashes 2 LEDs alternately. It only uses a few basic components, so why don't you try it!
Gather the Parts Needed.
Parts list:
- 2N3904 transistors x2
- 10µf caps x2
- Red LEDs x2
- 470Ω resistors x2
- 100kΩ resistors x2
- Assorted jumpers
- A breadboard
- 9V battery
- 9V battery clip
The Schematic Diagram.
Follow the schematic diagram for this circuit.
Insert the Transistors and Resistors.
Insert the 2 transistors in your breadboard like the one on the picture. Then, connect the emitters of the 2 transistors to the ground(negative) rail.
Connect the 2 100kΩ resistors to the bases of the transistors and the other end to a free rail.
Connect the 470Ω resistors to the collectors of the transistors and the other end to a free rail.
Insert the Caps.
Insert the 2 capacitors as shown in the picture. Put the negative side of the caps on a free rail on the breadboard.
Jumpers and LEDs...
Place jumpers as shown and noted in the pictures.
Connect jumpers from the positive rail of breadboard to the 100kΩ resistors.
Connect the Battery.
Connect the battery to its respective rails and see if it blinks.
Congratulations, you have made your project!