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Quiet transistor driven buzzer with a bc337 transistor and 5volts

picme 6495 5
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  • #1 10931421
    picme
    Level 9  
    Hi, I've been driving a small buzzer with a BC337 transistor and 5 volts. Unfortunately, it is far too loud. I have introduced a small 10k pot thinking I could use this to reduce the sound. When I increase the resistance it starts to reduce the sound a little then the sound stops hardly reducing it at all. Is there any other way I could do this? I really want it very quiet if possible. Sorry I have no information on the buzzer except that it's rated at 5V and Arduino compatible.
    Quiet transistor driven buzzer with a bc337 transistor and 5volts
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  • #2 10934376
    predom
    Level 26  
    Try to connect it in this way. If it doesn't work, you'll need to change the buzzer to the quieter one... PS What "Arduino compatible buzzer" mean...? I think you could use any 5V buzzer here... Has it got its own internal generator? PS Sorry for my english...I'm not good at this language...

    Quiet transistor driven buzzer with a bc337 transistor and 5volts
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  • #3 10937462
    picme
    Level 9  
    Thank you for your prompt reply, I will connect it up and see. I'm not really sure what "Arduino Compatible" means, I guess you can hook it up without using a transistor.
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  • #5 10946044
    picme
    Level 9  
    Didn't have much luck with a 10k pot. I was hoping to reduce the sound output down to a beep that you would get from a digital watch. There are buzzers out there that run from 3 volts but I'm sure it would still be very loud. Any ideas?
  • #6 11289875
    lorenzo8
    Level 1  
    Sorry, maybe low tech fix - one piece of adhesive tape (common) on the hole of the buzzer. I do it that way for my kitchen timer.
    P.S. one photo or link images it might be better
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