Re: Peak detector

In article <Hb0Uf.63$Qw6.21@xxxxxxxx>, scada <scada@xxxxxxxxxxxxx> wrote:
[....]
Thanks Tom. I forgot to mention, these are single pulses. I also thought of
using an AD on a pic chip. If I have to go that far, I will add memory and
display the waves on a laptop using my favorite graph program (Dplot). Then
I could instruct the operator to save the files, and I could evaluate them
at a latter date. I was hoping to avoid all that however. I was looking for
a simple one chip solution just to capture peak amplitude, do some math and
give a go - no go indication. I can assume the waves to be similar if the
gain difference is where it should be. I found Analog devices makes the
PKD01, I don't know if it can detect a single pulse - I will read the
data*** latter.

Is the go-no-go output all you need? or do you also want the actual height
of the peak?

If you just want go-no-go, a comparitor and a latch would do.

Since LM339s come 4 to the pack and they make lots of latches per package,
you could make a "2 bit" flash converter to drive a string of 4 LEDs to
give, "horrid", "bad", "good" and "wow" indications.

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