In post #34 the TS states that it is a water detector and he is using a relay "to trigger the buzzer", and else where states that it is a 12 volt device.
So my suggestion now is for the TS to go online and examine the Digikey catalog for SOUNDERS, not buzzers. The fact that many use an incorrect term does not make the term correct. And with a relay contact doing the switching there should be no complications or technical challenges.

 

Would the single tone buzzer be acceptable if it gave an interrupted tone - beep beep beep...

Yes

 

Yes

In that case this circuit will do the job.
https://circuits-diy.com/simple-beeper-sound-circuit-using-ic-ne555/

 

Would the single tone buzzer be acceptable if it gave an interrupted tone - beep beep beep...

That's what I suggested in #36.

 

In that case this circuit will do the job.
https://circuits-diy.com/simple-beeper-sound-circuit-using-ic-ne555/

Thank you.

 

You need to answer this question.
What sound does your buzzer make when you apply 12VDC?

 

You need to answer this question.
What sound does your buzzer make when you apply 12VDC?

Its continous beeeeeeep....... Sound

 

Its continous beeeeeeep....... Sound

Thanks. That is the wrong type of "buzzer" for what you want.
What you need is a piezoelectric transducer. This produces no "beeeep" when DC voltage is applied.

It may look like these pictures.

 

Thanks. That is the wrong type of "buzzer" for what you want.
What you need is a piezo-electric transducer. This produces no "beeeep" when DC voltage is applied.

It may look like these pictures.
View attachment 261046

View attachment 261047

OK

 

Thanks. That is the wrong type of "buzzer" for what you want.

But that continuous buzzer will work just fine with the circuit in post #43 to make the beep, beep, beep... sound.

 

But that continuous buzzer will work just fine with the circuit in post #43 to make the beep, beep, beep... sound.

Yes. If TS wants "beep-beep-beep..." sound that is ok.
I though that TS wanted 2-tone siren sound.

 

Yes. If TS wants "beep-beep-beep..." sound that is ok.
I though that TS wanted 2-tone siren sound.

Delay in the beep sound will make a difference.

 

Delay in the beep sound will make a difference.

What do you mean by that?

Is a "beep - beep - beep -" acceptable to you?
Or do you want "bee baa bee baa ..."?

 

What do you mean by that?

Is a "beep - beep - beep -" acceptable to you?
Or do you want "bee baa bee baa ..."?

Any change in the circuit for "Bee baa bee ba......." As in the circuit for post

 

You cannot get "bee baa bee baa..." with your "buzzer".
You need to get a pieozelectric transducer. Or you take apart what you have and replace the electronics that is built-in.

 

This thread REALLY NEEDS TO STOP!!!

 

I believe the TS is willing to abandon the circuit he provided and create a circuit with parts he can get to make a "two tone" buzzer. The ambiguity is what "two tone" means.

Does it mean an alternating tone like low, high; or does it mean two tones at the same time like a chord?

Or does he mean using one “buzzer” to produce two different tones, depending on a set of conditions? He said it was an alarm… does he want one tone if door 1 is open (for example only), and a second tone for door 2?

Update: he wants the bee bah bee bah circuit. Or beep pause beep pause etc…

 

This thread close to 60 posts, but our members still can't get a clear picture, so this thread will be locked.

If you wish to reopen the thread then please draw a circuit, diagram, sound table and describe what you really want and then click the report button at the bottom, thank you.