I would second that, John states its the wave form.

Here is a quote form the old board, so any circuit wont work

"I used both the 3 x 23 awg at 1/2lb spools and 3 x 18awg at 1lb spools... Built as that schematic shows, you should see between 3khz to 6khz with the 3 x 18 at 1lb with the welding rod in the coil. The 555 timer output on Johns was somewhere between 3-15hz is all... allowing significant time to build a voltage in that tiny 3.3uF cap. There is significant voltage built up in the relative ratio of the oscillators self oscillation and the discharging of the cap via the SCR... I could see it get up to over 100volts easy... and if I shut off the scr portion it would go over 700volts pretty fast... The spikes on the scope were right around 700 volts the whole time... tho the little bd243c wouldn't get warm and I wasn't using any heat sink. "

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I have made my first solid state charger, using the schematic from page 46 of the FEG book. I have been able to resurrect 2 old deep cycle batteries so far that where beaten up pretty bad in a solar system (bulging, high impedance etc.) I used a microchip to turn on the opto coupler instead of the 555 chip because I thought I might be able to get better performance by using a higher duty cycle than the 50/50 from a 555. I have not found a setting yet that works better than 50/50. Here are the specs:

Tri-filar wound
450 turns Awg #23 copper magnet wire
3/4" R60 welding rod core
913hz oscillations on cap
cap dump every 200ms
peak voltage on cap 270v
In the book (pg 109) it says the oscillator should be at 25Khz. Mine doesn't get anywhere near that, only 914hz. I wonder if anyone else has had one run that fast.

John Bedini’s Answer

You did great, the waveforms are correct. for the Iron core it's working fine, air core is next 2.5 k to 25 Khz. Measure the radiant current and wave form by using a coil to pass the discharge wire through. be very careful if you get it up in power as it is close to your nerve impulses. The stair step looks just like Beardens analogy. Great work keeps going. That waveform can do wonders not fully explored yet. That is Tesla's time wave that he talked about. Great scope shots. Thanks for posting this. You can bias the core with a week magnet, power will increase in only one direction try it you will see. you can control the Bloch wall of the coil, additive energy sucked from the magnet.