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DOORBELL circuit / project

Discussion in 'General Electronics Discussion' started by Alichino, Feb 25, 2012.

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  1. Alichino

    Alichino

    1
    0
    Feb 25, 2012
    I am currently making a circuit which, hopefully, will play a series a sounds from a 8ohm speaker after pressing a switch - a doorbell, essentially.
    Does anyone know what the relation between the frequency of the emitted sound and the RC in the circuit is?
    Also, the 8ohm speaker, while loud and everything, produces really unpleasant sounds, like a wailing siren with flu. Uhh. Are there any better sounding speakers out there?
     
  2. jackorocko

    jackorocko

    1,284
    1
    Apr 4, 2010
    You probably have a lot of noise on the output or you are over driving the speaker.
     
  3. duke37

    duke37

    5,364
    769
    Jan 9, 2011
    I doubt if it is the speaker. What circuit are you using to drive it?
     
  4. twister

    twister

    172
    7
    Feb 12, 2012
    What circuit are you using?
    This is the formula, Resistance times capacitance equals time in seconds, one divided by seconds equals frequency.
    1/RC=frequency
    Example 10k ohms times .1 microfareds= .001 second. 1 divided by x or .001= 1000 Hz.
    A sine wave generator might give a more pleasant sound than a square wave.
     
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