How to build Two Flashing LEDs Circuit Schematic

September 27, 2010 - category: Light flasher


Here is the circuit diagram of Two Flashing LED's for different applications (such as model construction), and recreational. Having adjustable flashing speed with two potentiometers. It is the collection of a few active and passive components. This circuit is very easy to built ( a good idea for beginners ) and can be build on a general purpose pcb or on a veroboard. The complete picture and schematic of this project is shown below

Picture of the project:

Two Flashing LEDs Circuit Schematic-Picture of the project:

Circuit diagram:

Two Flashing LEDs Circuit Schematic


  • R1-R2 = 1K
  • R3-R4 = 10K
  • P1-P2 = 250K
  • C1-C2 = 10uF-25v
  • Q1-Q2 = BC547B
  • D1-D2 = Red-Green LED
  • B1 = 9 volt battery

circuit from http://www.extremecircuits.net/2009/12/two-flashing-leds-circuit-schematic.html

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