[sdiy] 7-seg LED driving frequency

[Seb Francis]

100Hz it is then :)

ChristianH wrote:

>On Tue, 25 Oct 2005 15:36:57 +0100 Seb Francis <seb at burnit.co.uk> wrote:
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>>Thanks Ken & Simon for your answers.
>>
>>Going by my experience of 'comfortable' CRT monitor refresh rates I 
>>would say that I should run it at 100Hz+ to get rid of any perception of 
>>flicker.
>>
>>But I was wondering whether I should try and run it above audio 
>>frequency to try and avoid audible noise coupling into the power 
>>supply?  Maybe I am worrying too much about nothing :)
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>I think that would be overkill. And the fact that you won't hear any
>coupled noise doesn't mean it's not there - in the end it may be just
>harder to find out why some amp stage or comparator is acting strange,
>because it's being shaken by some 50 kHz.
>
>Christian
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