How to Flash two 240 volt bulbs alternatively

Discussion in 'General Electronics Chat' started by jmarshal84, Sep 28, 2016.

  1. jmarshal84

    Thread Starter New Member

    Sep 28, 2016
    2
    0
    Hi all,
    I'm very new to electronics,
    i want to flash two 240 volt bulbs alternatively , how to do this can any one help me to build a circuit for this.


    Best Regards
    Marshal
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,239
    619
    Welcome to AAC!
    Your requirements are a bit vague. A SPDT switch could do it but, since you're asking for a circuit, your requirements must be more complicated.
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    Welcome to AAC.
    In order to avoid playing the game of 101 Questions and Answers, you do need to be more up front about what you are doing.

    What is the power rating of the light bulbs? We are to assume these are 240VAC bulbs?
    What is the duration that one bulb will be lit before alternating to the other bulb?
    Why are you doing this?
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,769
    969
    Wig Wag
     
  5. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,777
    1,103
    Incandescent, CFL or LED bulbs?
     
  6. jmarshal84

    Thread Starter New Member

    Sep 28, 2016
    2
    0
    Hi
    Thank u for ur reply
    My requirement is very simple like flashing two led bulbs using 555 timer ic, instead of led I want to use 240 volt bulbs
     
  7. dl324

    Distinguished Member

    Mar 30, 2015
    3,239
    619
    SPDT relay:
    upload_2016-9-28_13-32-39.png
     
    Last edited: Sep 28, 2016
  8. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    Probably the easiest way while still being safe is to directly drive a pair of solid state relays from the 555.
    Depending on how frequently and length of time you want the lights to flash a mechanical relay may not have adequate reliability.
     
  9. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    Still playing 20 questions. I would say that I have seen relays rated at 100,000 operations and higher, but we have no information on how many alternations per minute or whether this will be a 5 minute display or a permanent installation.
     
  10. GopherT

    AAC Fanatic!

    Nov 23, 2012
    5,992
    3,745
    Or one part of a bigger project.

    "... and I want them to flash alternately every time my girlfriend pops out of a giant cake at half-time..."
     
Loading...