It is a PATENT not a kit set circuit plan with detailed explanation.
It would be cheaper for Horvath to give away the 'secret' and save himself a lot of money. He did not give away his circuit diagram to anyone.
https://permies.com/t/160102/a/245079/Horvath-circuit-CDI-600W.jpg would you give away a circuit diagram and then pay for a patent?
Stephen Horvath wanted to make money as everyone has to.
Is anyone selling Horvath circuit board kit sets online today?
Did Horvath run cars on water? I say YES!
Did he show how? Why would he?
The same applies to Stan Meyer