Its a fresh circuit assembled by you and you are not happy with your model?
Check the operational voltage range of the Buzzer. There are common Buzzers operate 3-27 volts.
Is it getting sufficient current and/or voltage?
Can you give the circuit diagram.
---------- Post added at 23:51 ---------- Previous post was at 23:39 ----------
The downside is of a buzzer is that it is relatively power hungry(good amount of current), in most cases requires more than 5v to drive to make a decent noise, but more importantly the crappy ones can produce a significant back-emf which can easily destroy a transistor if you don't put a suppression diode across them.
Could you retrieve buzzer's schematic from this commercial board? Is something written on this buzzer to lead us to the datasheet? What is the driving voltage of the buzzer?
Without some basic information, it's hard to assume what the problem could be.
Could you retrieve buzzer's schematic from this commercial board? Is something written on this buzzer to lead us to the datasheet? What is the driving voltage of the buzzer?
Without some basic information, it's hard to assume what the problem could be.
Agree with Mr. Alexxx.
Without those details its very hard to comment.
Off the record, I can say that the given picture looks more like a piezoelectric sound device without an oscillating electronic circuit. Maybe the oscillating circuit present on the circuit board. Without a proper oscillating circuit or any malfunction in this circuit the sound will be distorted / low.
By the way, I've gotten another device with good sound, then connected its buzzer to the malfunctioned device and it worked well, so the problem is definitely in the buzzer, the question now:
Is replacement the only fixation for this device? or I can do something with this weak buzzer.
---------- Post added at 20:18 ---------- Previous post was at 20:10 ----------
Off the record, I can say that the given picture looks more like a piezoelectric sound device without an oscillating electronic circuit. Maybe the oscillating circuit present on the circuit board. Without a proper oscillating circuit or any malfunction in this circuit the sound will be distorted / low.
By the way, I've gotten another device with good sound, then connected its buzzer to the malfunctioned device and it worked well, so the problem is definitely in the buzzer
Maybe but not definitely. Still we don't know operating voltage and we'll never find out since no datasheet is available. You could measure operating voltage on both boards, or place the "problematic" buzzer on the other board, or at least observe the driving circuit on both boards. Moreover we don't have a datasheet neither from the second buzzer. I wouldn't jump to conclusions so easilly.
However, there is a chance that the problem could be a weak buzzer.
A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. A piezoelectric element may be driven by an oscillating electronic circuit or other audio signal source.
A pizzoelectrict buzzer may or may not come with an oscillating circuit connected inside a black round housing like the following:-