>> I am assuming that the tuner runs the LEDs continuously at the tuning
>> frequency while it is in use. If that is the case then there is no sense=
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>> in
>> using a really large cap. You only need one to hold enough charge for on=
e
>> pulse of the LED. You certainly aren't likely to have one big enough to=
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>> hold
>> a charge through a whole tuning cycle, which I am guessing will be at=20
>> least
>> several seconds.
>>
>> -- Bob Ammerman
>> RAm Systems
>>
>
> It is to be noted that with a tuner, even one pulse at 1:10 duty can be
> in the order of milliseconds at the lowest frequency.
> With mine the lowest frequency is around 16Hz (about the lowest audible)
> so 1/16 =3D 62.5ms @1:10 duty =3D 6.25ms pulse length.
> This is assuming you keep the pulse length a ratio of the frequency and
> not some standard length which is independent.

It's a guitar tuner. How low can you go on a guitar?!?

-- Bob Ammerman
RAm Systems

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