Quote:
Originally Posted by old_tv_nut
@Penthode, are you sure the amplifier output will be the right polarity?
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Haha. I have thought about that. I should find out shortly.
My guess is that perhaps the parabola inverts depending upon the position of the CT100 convergence control? Eg the midpoint there is no correction and one control extreme the parabola is inverted from the other extreme? I have nowhere read of a reported phase error when wiring the primary of the earlier replacement transformers or if any attention was paid to phase. It would appear logical to have a plus/ minus correction assuming when the 15GP22 was constructed, the convergence was close to begin with and that the dynamic correction was to correct for minor physical discrepancies.
If it does need to be inverted I could add an inverting amplifier stage.
Maybe I will be lucky? Unfortunately there are no sample waveforms to reference. It will be interesting to find out and dig into this more deeply.
12-29-2023, 07:12 PM
Hybrid Mode
