voice activated relay

Reply to Thread

Discussion in 'The Projects Forum' started by glenwanda, Feb 10, 2011.

Reply to Thread
  1. Feb 10, 2011 #1
    glenwanda

    Thread Starter New Member

    Aug 25, 2010
    3
    0
    Need a schematic for a voice activated relay. 9vdc. momentary on then off.
    Hope someone can help me.
    glenwanda
     
    #1 Reply
  2. Feb 11, 2011 #2
    nerdegutta

    Moderator

    Dec 15, 2009
    2,674
    918
    Hi.

    Just thinking....

    A microphone picks up some sound. It will trigger a 555, monostable timer, and the timer will activate the relay. After a period of time, the 555 time-out, and the gos off.

    Something like that?


    After a quick google I found this:

    [​IMG]
     
    #2 Reply
Loading...
Related Forum Posts:
  1. leonhart88

    AC Activated Relay Problems

    Posted by leonhart88 in forum: The Projects Forum
    Replies:
    8
    Views:
    2,081
  2. macintosh1097

    Voice Activated Christmas Lights

    Posted by macintosh1097 in forum: The Projects Forum
    Replies:
    5
    Views:
    1,660
  3. Wheels_4x4

    Voice Activated switch

    Posted by Wheels_4x4 in forum: The Projects Forum
    Replies:
    3
    Views:
    2,712
  4. SoftSparky

    Simplest voice activated car ignition

    Posted by SoftSparky in forum: The Projects Forum
    Replies:
    4
    Views:
    4,161
  5. glenwanda

    voice activated momentary on then off relay

    Posted by glenwanda in forum: The Projects Forum
    Replies:
    4
    Views:
    2,692
You May Also Like:

  1. MIT Fusion Reactor Sets Another Record Right Before Being Shut Down for Good

  2. Could Carbon Nanotube 'Ice Wires' Be the Conductor of the Future?

  3. Linear Amplitude Modulation Applications


Load More Articles