Camera Sound...

Discussion in 'General Electronics Chat' started by redlight000, Apr 15, 2010.

  1. redlight000

    Thread Starter Member

    Feb 26, 2010
    66
    2

    Hi all,

    can anyone help on a circuit, that simulates the charge up sound of a camera?? I know this post is a bit flimsy, but dont know how to go about it.. really.. honest here...

    any rough circuit ideas or links.. would be appriciated...
    thanks.

    redLight000
    :D


     
  2. kingdano

    Member

    Apr 14, 2010
    377
    19
    i am by no means an expert...

    but let me see if i have the requirements correct..

    you want to design a circuit which makes the same noise as a flash charging on a camera - the high pitched wind-up?

    i think the most sensical approach would be to actually copy a flash charge circuit verbatim though, then you wouldnt have to devise a way to mimc the sound.
     
    redlight000 likes this.
  3. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    Do you mean the flash charging noise? High pitch whine that gets higher then stops?
     
  4. redlight000

    Thread Starter Member

    Feb 26, 2010
    66
    2
    Hi Markd77,

    Yes mark, thats what I would like.. If I get a circuit if you can help me.. I be very greatfull.
    thankyou.
    I be putting the sound out of a ceramic earpiece... ok.. theres no load on them and very good as a output device on sounds apps) of course... limits apply
    cheers
    :D
     
  5. kingdano

    Member

    Apr 14, 2010
    377
    19
    A quick Google search offered up a lot of useful websites for charge circuits:

    http://electronics.howstuffworks.com/camera-flash2.htm

    http://www.fancon.cz/slave-flash-trigger/slave-flash-en.html

    If i were you i would start with the second link, and build it up to make sure the circuit works.

    If you want to amplify the sound you could use a microphone near the flash bulb and use a simple audio amplifier circuit - i am sure if you use the search function of the website there have been many discussed here already.
     
    Last edited: Apr 15, 2010
    redlight000 likes this.
  6. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    To be honest I don't know aneasy way to do it. The first link posted by kingdano looks useful. You wouldn't need the second transformer. The noise comes from vibrations in the transformer windings so could be complex. There are dangerous voltages in flash circuits and they are stored in the capacitor even when the battery is disconnected so I think maybe some research into 555 oscillator chips and ramp generators to get the increasing frequency could be in order.
     
    redlight000 likes this.
  7. kingdano

    Member

    Apr 14, 2010
    377
    19
    Please, please be careful when working with this circuit - properly ground yourself and everything you are working with.

    Better yet, if you are inexperienced with testing circuitry in general best to not start with something dangerous like this.
     
    redlight000 likes this.
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