How to Convert 12volt Relay to a Speaker





Introduction: How to Convert 12volt Relay to a Speaker

This is a simple way to made a Speaker from 12 volt Relay .
1- 12 Volt relay.
2- Plastic dish.
3- Strong magnet.
4- Audio Amplifier.

Connect The input of Audio Amp. to PC or any media player audio output.
Connect the output of Audio Amplifier to 12 volt relay coil  and fellow the below video.  

Note that the Audio Amp. used TDA1557 Chip shown in attached Data sheet. 




    • Pocket-Sized Contest

      Pocket-Sized Contest
    • Paper Contest 2018

      Paper Contest 2018
    • Trash to Treasure

      Trash to Treasure

    We have a be nice policy.
    Please be positive and constructive.




    As an instructable, it's pretty good. However I wouldn't exactly call it a "tip and trick"

    don't you mean that the other way around ? it's a trick, not an Instructable !

    No. The author entered this in an electronics tips and tricks contest. This isn't something that would be convenient to someone doing elecronics.

    Well , I respect your opinion but I considered a relay as an electronic parts and I made a tricks to convert it to a speaker , that's why I entered this to this contest.

    True. It is fairly impressive. How does this work anyway? Like, isn't sound analogue, and a relay digital?

    a relay is just an electromagnetic coil and some contacts, like an electric switch, there is NOTHING digital about a relay

    would any 12 volt relay work ? and why are the resistors there, wats their purpose used 4?

    wow! this is something!