Class D audio amplifier using only the 555 timer IC

Posted on October 14, 2009 by admin

More fun with the ubiquitous 555 timer IC. Using pin 5 on the IC as an audio input to modulate the width of the 80Khz pulses, I connect the output to a speaker who’s voice coil acts as an adequate filter for the HF signal, leaves us with audio. In this case Jimi Hendrix!

Duration : 0:4:50


[youtube fvOSWekG7sY]

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5 Responses to Class D audio amplifier using only the 555 timer IC

  1. sinisasokolovic says:
    October 14, 2009 at 8:24 pm

    Mad Skilz :D
    Mad Skilz :D

  2. CoolDudeClem says:
    October 14, 2009 at 8:24 pm

    I didn’t know a 555 …
    I didn’t know a 555 timer ic could be used in this way.

  3. bonecrime says:
    October 14, 2009 at 8:24 pm

    This looks cool! Do …
    This looks cool! Do you have a schematic for it? :) I have a couple of 555s laying around … :)

  4. vegmatic1966 says:
    October 14, 2009 at 8:24 pm

    I have not tried …
    I have not tried that yet, but it would be a simple circuit using the 555, a power driver stage and an output transducer.
    Thanks for watching!

  5. Kugruabay says:
    October 14, 2009 at 8:24 pm

    I think the 555 has …
    I think the 555 has been used in more diverse home brew projects than anything else, pretty cool.
    question, have you ever built an ultrasonic cleaner with a 555?
    i was thinking a small one could be used to clean inkjet cartridge heads.
    thanks, i like your channel.