Originally Posted by
Retro
Now a word about the pulse trains used to drive the VIC and the resulting waveforms in reference to Meyers original diagram. Many may be of the opinion that the rising pulse train represents the resonant frequency. But I have a different opinion. In the illustrations (below), notice the three wave forms. I believe the waveform labeled “Cathode” represents the waveform that exists between ground and the connection of the diode’s cathode to TX4. Connecting an oscilloscope directly to B+ and B- at the very least would change the resonance of the whole circuit.
I also believe the waveform labeled “B+ and B-“ is the correct representation of the differential that exists on the electrodes (B+ and B-) at any point in time during the pulse train. The waveform in black being the differential that exists on the electrodes, the red being the differential that exists between ground and the junction of the diode to TX4.
(Continued)