Re: Frequency sensor cct for a power line...

On Wed, 30 Sep 2009 17:28:40 -0500, chulanga wrote:

Hi guys,
I want to find a Frequency detecting cct or a chip for 300V power line.
It is to be measured small fluctuations around 50Hz Domestic supply line
Hope there are people to help me.. :)

There are approximately one bazzilion different ways to do this. Even
when you throw out the 99.44% of them that are pointless, that still
leaves you with a bazzilion different good ways to solve this problem.

Tell us what you really need, and maybe someone can help. High
precision? Quick acquisition? Low cost? Easily understood? Uses no
processor resources? Minimizes external components through clever use of
processor resources? Sensitive to fast variations of frequency?
Insensitive to short-term changes? What?