is it possible to build a frequency to voltage converting that runs off of 2 AA batteries.
- posted
17 years ago
frequency to voltage converter
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- posted
17 years ago
Sure.
John
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- posted
17 years ago
fully charged, or flat?
martin
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- posted
17 years ago
ok. could u please post a chip part number. thanks
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- posted
17 years ago
What frequency range and output voltage range?
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- posted
17 years ago
1400 - 3500 Hz and max output of 3 v
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- posted
17 years ago
2003
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- posted
17 years ago
What current? I am sure you can find chips to do it. The cheapest way I can think of is to use a $2 micro to switch/pump/charge a large capacitor, based on the input (frequency) and output (voltage). You can think of the micro as a feedback controller.
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- posted
17 years ago
Or fire a one-shot, HC123 maybe, and lowpass filter its output.
John
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- posted
17 years ago
Actually, the batteries should be charged while measuring. :-)
Rene