How to convert 12volt relay to a Speaker

This is a simple way to made a Speaker from 12 volt Relay .

Materials:
1- 12 Volt relay.
2- Plastic dish.
3- Strong magnet.
4- Audio Amplifier.

Steps:
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.

TDA1557Q_CNV_2.pdf64 KB

4lifenerdfighter says: Jul 3, 2012. 6:18 AM

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

Lectric Wizard in reply to 4lifenerdfighterJul 3, 2012. 9:22 AM

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

4lifenerdfighter in reply to Lectric WizardJul 5, 2012. 6:49 AM

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

Husham Samir (author) in reply to 4lifenerdfighterJul 5, 2012. 8:39 AM

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.

4lifenerdfighter in reply to Husham SamirJul 5, 2012. 10:42 AM

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