propse solution to amp problem #1
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Hi,
This is a proposed solution to the amplifier clipping problem.
I haven't been able to test it yet due to my unit being a bit messed up, but Its based on the assumption that the output of the filter is:
I have picked a target gain of 8 (actual 7.8) to keep some headroom in the opamp. Actual peak-peak should be 2.34V centered around 1.5V, I have adjusted the divider to center the signal between the rails.
Changes are:
R5 -> 200K
R6 -> 10K
Add resistor from amp output to inverting input @ 68K
vectorscope-synth.pdf