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Old 21st Apr 2021, 4:14 am   #26
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Join Date: Oct 2010
Location: Tintinara, South Australia, Australia
Posts: 1,638
Default Re: Buffer Amplifier for Digital Frequency Counter

Originally Posted by Bazz4CQJ View Post
Yes, the test equipment needed to evaluate the pre-amp of this thread, at least to 30MHz, would not be too demanding.

But it has been known for these sort of amps to oscillate up in the GHz region

One magazine (who shall remain nameless ) had a frequency counter design with an input stage that was way overboard and generally as unstable as anything, but it still got published.
Terry VK5TM
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