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Amplifying piezo buzzer

oscar123

Oct 15, 2017
2
Joined
Oct 15, 2017
Messages
2
hi, i am making a motion pir detector and i made it but it rings super quietly i was wondering if any of you know how to make it louder without a transistor because i do not have many of those i have:s9015,S9014,S9013,S9012,S8550,S8050,S9018,2N5551,2N5401,A1015,C1815,2N4403

thanks for the help!
 

Audioguru

Sep 24, 2016
3,642
Joined
Sep 24, 2016
Messages
3,642
We do not know if the piezo buzzer has its + terminal at the positive supply and its - terminal is driven to ground with "something", or the opposite.
If it is known then a transistor can be used to drive the piezo buzzer from a higher supply voltage.

EDIT: Sometmes the sound hole in a piezo buzzer is sealed with tape so it can be cleaned. Remove the tape and it will be much louder.
 
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