Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How does a two-transistors LED flasher (flip-flop) circuit work?

  1. Mar 3, 2007 #1
    I don't know when does a capacitors and the transistors switch and turn the other off considering the voltage across them.........well, on other words, don't know what makes the LEDs do the flipflop thing......HELP
  2. jcsd
  3. Mar 4, 2007 #2


    User Avatar
    Gold Member

    This is a nice little project with a description on how the circuits works:
    http://www.talkingelectronics.com/Projects/FlasherCircuits/Page83FlasherCircuitsP1.html [Broken]
    Last edited by a moderator: May 2, 2017
  4. Mar 5, 2007 #3
    Thanks, this really helps.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook