[SOLVED] Discontinuous Buzzer circuit !

[kunaltg]

Hello guys ,i have brought TMB12A05 Buzzer ,,Its sound is good but its continuous !!

I want to make it discontinuous, but without any controller or IC ,,I just want know if there's an analog circuit for making it discontinuous !!

I want it to be as small as possible !! is it possible to do it with some combination of cap & diode ??

 

[pinout]

A 555 chip should do this nicely.

 

[kunaltg]

Yes it can !! but i don't want to use any IC !! I want it as small as possible !! is it possible ??

 

[pinout]

I don't think it will be easy with passives, and they will be bigger than a 555 anyway.

The only thing I can think of is a tunnel diode oscillator which I have never used, but think they are more HF areas.
You need something that will charge up and then discharge.
If you are lucky the piezo could be high impedance across the supply pins while off and go low impedance when on.
Then you could try and RC circuit with Piezo across the C. It would allow the volts to rise and then burst into song until the volts drop, return to high impedance allowing the C to charge.
It seems unlikely, but give it a try?

 

[BradtheRad]

A flasher led has a miniature oscillator inside it. If the buzzer does not draw too much current you can put it in series with the flasher led.

Or add a transistor if it uses a lot of current. Use the flasher led to bias the transistor.

 

[kunaltg]

Thank you all for your valuable replies !!

 

[pinout]

I like BradtheRad's suggestion, this is a neat idea to investigate.

Incidentally, those "flickering tea light" that you see around are the opposite, they use sound chips to drive the led with the music!

 

[kunaltg]

Yes its really what i wanted !! Thank you all !!