Author Topic: 121GW louder beep  (Read 1023 times)

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Offline fichambaTopic starter

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    • jngpro
121GW louder beep
« on: April 18, 2023, 11:20:13 pm »
Hello everybody,
I've just received today my new EEVblog 121GW DMM, and it is a nice creature!  :)
I have only one question: is it possible, in any way, to raise the beep volume?. I know this is not implemented in the software, but I really need to do it. I have a bunch of DMMs in the lab, both bank and portable, and when I'm looking through the microscope I always need to use a Fluke (say, the 87 IV), because these are the only ones with a decent beeper. Even my Rigols have a ridiculous beep sound... I love this little beast, so IMHO its a bit louder than others, but not enough, almost for me (specially whith the rest of the equipment turned on...fan noise is terrible, specially in Tek scopes -colour, tube, I mean).
TIA for your help, and I send you my best wishes from Madrid, Spain.

 :-DMM
 

Offline thm_w

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Re: 121GW louder beep
« Reply #1 on: April 19, 2023, 10:31:21 pm »
You can see the schematic here:
https://github.com/tpwrules/121gw-re/blob/master/pdfs/121GW%20EEVBlog%20Circuit%20diagram.pdf

Buzzer is listed as ALP05S.
Reducing or removing the series resistor might make it louder.
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Offline fichambaTopic starter

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Re: 121GW louder beep
« Reply #2 on: April 19, 2023, 10:47:12 pm »
Great!. Thanks a lot for the schematics. You make my day!  :-+ :-+ :-+
 

Offline rodcastler

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Re: 121GW louder beep
« Reply #3 on: April 20, 2023, 11:28:42 am »
Funny: I publihed a tutorial on how to lower the volume on the 87V bc I felt it was too loud to my liking.
 

Offline fichambaTopic starter

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Re: 121GW louder beep
« Reply #4 on: April 20, 2023, 10:12:55 pm »
Funny: I publihed a tutorial on how to lower the volume on the 87V bc I felt it was too loud to my liking.

...it never rains to everyone's liking!  :D
 


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