UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 5FP7 project starting with the focusing coil.

AdrianH · 29th Oct 2021, 1:10 am

Just had a thought on this, I believe I am going to need to reverse the waveform if I am driving the grid of the EL84. The grid needs to be higher at the end of the trace to make the current through the transformer and anode highest before I cut back to have any chance of fly-back moving the trace to the opposite side of the screen. Does that seem correct?

Adrian

29th Oct 2021, 1:10 am	#34
AdrianH Octode Join Date: Mar 2020 Location: Blackburn with Darwen, Lancashire, UK. Posts: 1,572	Re: 5FP7 project starting with the focusing coil. Just had a thought on this, I believe I am going to need to reverse the waveform if I am driving the grid of the EL84. The grid needs to be higher at the end of the trace to make the current through the transformer and anode highest before I cut back to have any chance of fly-back moving the trace to the opposite side of the screen. Does that seem correct? Adrian __________________ Asking questions and learning, or trying to! Youtube EF91Valve