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RE: GM70 OPT update

When you changed just the output transformer,that changed the 1khz sq wave that much? If you using some global feedback with a resistor/cap combo,you need to add come capacitance across the feedback resistor. Start with about a 70pf and go up a little until the spike ringing in the corner disappears.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

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