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Old Fluke Multimeters

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DC1MC:

--- Quote from: Dave Wise on March 26, 2024, 03:57:04 pm ---Is there a way to change the frequency of the 8060A's continuity beeper?  It's 2670Hz which is my hearing loss notch.  I can't hear it unless I hold the meter right against my ear, which makes continuity test unusable.

--- End quote ---

I have helped a friend with this problem, the solution was to install a very sensitive red LED on parallel on the beeper. Worked like a charm, it doesn't preserve the original historical aspec of the devecie but the friend wanted to actually use it.

 Cheers,
 DC1MC

Dave Wise:
I'll keep that in mind, DC1MC; a light would catch my eye better than the LCD bar.  (I have to say, the bar is pretty good to start with.)  But I was hoping DRTAYLOR would say yes there's a jumper on the MAC chip.

I have an idea for shifting the frequency, using a SOT-23 microcontroller and FET in place of TO-92 Q6.  It should be possible to monitor the TONE signal and output a chosen frequency while TONE is active.  The interesting part will be programming the part to sleep between edges, something I've never done before.  Win or lose, I'll post results in a new thread.

DC1MC:
I think this a job for Captain Padauk, I love the little guys, and think that it should be possible to reduce the freuency with little programminc effort.

DC1MC

opabob:
I still like my ol' Fluke 77.  Not a -II or -III, just a straight Fluke 77.

On the bench I have an Agilent 34401, but still love my Fluke 77.

YMMV

aeg:
Signal levels permitting, you could conceivably shift the tone down an octave with a D flip-flop, no programming required.

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