Author Topic: Source for replacement piezo buzzer? (Fluke 117)  (Read 4288 times)

0 Members and 1 Guest are viewing this topic.

Offline iXod

  • Frequent Contributor
  • **
  • Posts: 284
  • Country: us
Source for replacement piezo buzzer? (Fluke 117)
« on: May 12, 2016, 05:31:02 pm »
Piezo died in Fluke 117.

Where can I source a replacement piezo buzzer? Fluke no help.

Cheers.
 

Offline retiredcaps

  • Super Contributor
  • ***
  • Posts: 3491
  • Country: ca
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #1 on: May 16, 2016, 04:55:20 am »
There doesn't seem to be a Fluke part number, so I suggest going to digikey/mouser and trying a few different versions.

BTW, I saw your post about a DMM with a loud beeper

https://www.eevblog.com/forum/chat/what's-a-handheld-dmm-with-a-loud-beeper/

This may be an opportunity to try different buzzers in the 117 to find a really loud one?
 

Online Zero999

  • Super Contributor
  • ***
  • Posts: 14686
  • Country: gb
  • 0999
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #2 on: May 16, 2016, 07:42:02 am »
I don't know about Fluke but it most meters I've taken apart, the buzzer is just a piezo disc transducer which is externally driven by an oscillator or MCU IO pin on the main board.

It's unlikely it's the piezo which has failed because there really isn't anything to fail. It's far more likely a wire has become detached from either the piezo or the PCB.
 

Offline Raj

  • Frequent Contributor
  • **
  • Posts: 537
  • Country: in
  • Self taught, experimenter, noob(ish)
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #3 on: May 16, 2016, 09:00:11 am »
buy a "passive piezo buzzer"
http://www.ebay.com/itm/5-X-DC-3-24V-Black-Piezo-Electronic-Tone-Buzzer-Alarm-Continuous-Beep-DB-/201434092339
you might need to mod the housing though...get your dremil ready (cut the buzzer's housing not the meter's)
 

Offline Micke

  • Regular Contributor
  • *
  • Posts: 65
  • Country: se
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #4 on: May 16, 2016, 11:25:47 am »
In some FLUKEĀ“s there are two springs mounted on PCB making the contact to the piezo disc. I had one FLUKE 177 with faulty buzzer, but it was just the springs that got mis-aligned to the disc  :) puh!
 

Online Zero999

  • Super Contributor
  • ***
  • Posts: 14686
  • Country: gb
  • 0999
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #5 on: May 17, 2016, 11:23:46 am »
buy a "passive piezo buzzer"
http://www.ebay.com/itm/5-X-DC-3-24V-Black-Piezo-Electronic-Tone-Buzzer-Alarm-Continuous-Beep-DB-/201434092339
you might need to mod the housing though...get your dremil ready (cut the buzzer's housing not the meter's)
The buzzers linked to in your post are unsuitable as a replacement for the piezo transducer in a meter because they have a built-in oscillator. You need a piezo transducer without a built-in oscillator.
 

Offline Raj

  • Frequent Contributor
  • **
  • Posts: 537
  • Country: in
  • Self taught, experimenter, noob(ish)
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #6 on: May 17, 2016, 01:40:22 pm »
but I've linked passive peizo...IE without any circuitry just the peizo disk inside of plastic housing.... besides... he can desolder with ease
 

Online Monkeh

  • Super Contributor
  • ***
  • Posts: 6734
  • Country: gb
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #7 on: May 17, 2016, 01:47:03 pm »
but I've linked passive peizo...IE without any circuitry just the peizo disk inside of plastic housing....

'continuous beep'. That ain't a bare piezo.
 

Online Zero999

  • Super Contributor
  • ***
  • Posts: 14686
  • Country: gb
  • 0999
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #8 on: May 17, 2016, 03:07:17 pm »
You need a bare piezo transducer, like this:


http://www.ebay.com/itm/5-Piezo-Transducer-Sound-Discs-YOU-CHOOSE-SIZE-Drum-Trigger-Guitar-Pickup-/121253903935?var=&hash=item1c3b4bbe3f:m:mFyEDs70E0LLsV_harzYKeg

Note that they come in a variety of sizes, so make sure you get the right one.
 

Offline Raj

  • Frequent Contributor
  • **
  • Posts: 537
  • Country: in
  • Self taught, experimenter, noob(ish)
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #9 on: May 17, 2016, 04:21:50 pm »
those might be hard to source.My guitar had one :p
better look for whatever source is cheapest for you and salvage it from there
 

Online Zero999

  • Super Contributor
  • ***
  • Posts: 14686
  • Country: gb
  • 0999
Re: Source for replacement piezo buzzer? (Fluke 117)
« Reply #10 on: May 17, 2016, 07:14:57 pm »
those might be hard to source.My guitar had one :p
better look for whatever source is cheapest for you and salvage it from there
Peizo disc transducers fairly common. Most component shops sell them and failing that, cheap toys and musical greetings normally contain one.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf