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Was looking at the occasional chatter / motorboating I get on the IDX.
If you spice it, the output phase is greater than -180degrees whilst there is still lots of gain available.
So it appears clear that stability issues should be a problem at around 8Hz.
I looked at a similar topology that could be wire modded on an IDX board, this topology has about 30 degrees phase margin so would be stable and not chatter.
cant see how to upload a zipped folder?
S
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Was looking at the occasional chatter / motorboating I get on the IDX.
If you spice the Filter amps after the mixers/synch detectors , the signals at the output of the filter amps have output phases greater than -180degrees whilst there is still lots of gain available.
So it appears clear that stability issues should be a problem at around 8Hz and they are.
I looked at a similar topology that could be wire modded on an IDX board, this topology has about 30 degrees phase margin, whilst there was lots of gain available, so this would be stable and not chatter - ptoentially.
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Roman action with the IDX
A weeks coins/brooches.
The result of some very enjoyable detecting/amatuer archaeology on a previouly unknown roman settlement in uk. The likes of which I wont see again as most sites are stripped. All of these and other finds are gps'd and will be going to the local FLO for record with the land owners grace.
S
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