>
> On Mar 23, 2010, at 7:24 PM, Lucas Thompson wrote:
>
> I still use an old Wavetek handheld dmm that has that same kind of
> reading-to-audio-tone function for finding shorts and intermittent
> connections. It's really handy and a shame that all meters don't have
> this same thing.
>
> On 3/23/10, Vitaliy <piclist@maksimov.org> wrote:
>> Dwayne Reid wrote:
>>> I also (years ago) purchased something called a "Leak Seeker" that  
>>> is
>>> specifically designed for this kind of trouble-shooting.  It is
>>> essentially a high-resolution DC voltmeter that controls the pitch  
>>> of
>>> a tone.  Its really cool in that it auto-zeros itself as you  
>>> progress
>>> along the trace(s) heading in the direction of the short.
>>>
>>> You don't need to watch a meter - just listen to the tone as you  
>>> move
>>> the needle-point probe from place to place along the trace.  The
>>> fine-tip needle easily penetrates the solder mask.
>>>
>>> Its actually worked really, really well the several times that I've
>>> used it.  Do note that its designed to locate DC faults (as  
>>> opposed to
>>> pulses).
>>
>> Are these devices available nowadays? Anybody got a model number?
>>
>> Vitaliy
>
>
>
>
Does anyone have a block diagram of the ( voltage ? ) reading-to-audio- 
tone electronics ?
Gus
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