That´s where it all began. The iron idea was to get more swing. With resistors it´s a close call.
Solved!!
Use the N Chan and P Chan Concertinas, but put the two xfmr windings across the bottom and top Mosfet terminals respectively, with winding center tap to ground for the bottom side and to B+ for the top side. No resistors now. No DC current thru the windings now either. Twice the AC voltage across each winding.
If the xfmr is quadrifilar wound, then the two extra windings supply the drive signals to the output tubes.
If the xfmr is only double bifilar, then use two xfmrs, one for each output tube with individual bias V. Optional crossed caps could be placed between equivalent phases at the Mosfets to insure equal signals. Nothing but error corrections thru the caps, so no phase delays in the signal chain from them.
I think Edcor makes some bifilar interstage xfmrs. Looks like a good way to make inverted test signals from a signal generator for testing too. Have to try this.
Use the N Chan and P Chan Concertinas, but put the two xfmr windings across the bottom and top Mosfet terminals respectively, with winding center tap to ground for the bottom side and to B+ for the top side. No resistors now. No DC current thru the windings now either. Twice the AC voltage across each winding.
If the xfmr is quadrifilar wound, then the two extra windings supply the drive signals to the output tubes.
If the xfmr is only double bifilar, then use two xfmrs, one for each output tube with individual bias V. Optional crossed caps could be placed between equivalent phases at the Mosfets to insure equal signals. Nothing but error corrections thru the caps, so no phase delays in the signal chain from them.
I think Edcor makes some bifilar interstage xfmrs. Looks like a good way to make inverted test signals from a signal generator for testing too. Have to try this.
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Looks like it needs a current limiting resistor in the B+ and Gnd connections for zero signal DC idle current.