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
    2,626
    847
    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:
    1,778
  2. macintosh1097

    Voice Activated Christmas Lights

    Posted by macintosh1097 in forum: The Projects Forum
    Replies:
    5
    Views:
    1,491
  3. Wheels_4x4

    Voice Activated switch

    Posted by Wheels_4x4 in forum: The Projects Forum
    Replies:
    3
    Views:
    2,525
  4. maxpower097

    Laser Activated Relay Kit

    Posted by maxpower097 in forum: General Electronics Chat
    Replies:
    0
    Views:
    1,648
  5. SoftSparky

    Simplest voice activated car ignition

    Posted by SoftSparky in forum: The Projects Forum
    Replies:
    4
    Views:
    3,748
  6. glenwanda

    voice activated momentary on then off relay

    Posted by glenwanda in forum: The Projects Forum
    Replies:
    4
    Views:
    2,557
You May Also Like:

  1. Understanding Current-Voltage Curves of Non-Linear Devices

  2. World's Smallest Bluetooth Headset Includes Hefty Tech

  3. The Actively Loaded MOSFET Differential Pair: Output Resistance


Load More