Abstract
A large radio oscillator with unrectified alternating anode power-supply sends high-frequency power into a 50 meter wave-length antenna which is coiled up without insulation, and enclosed in a metal vacuum tank. Over 800,000 volts is generated inside of the tank exactly where it is to be used for x-rays or for accelerating ions. There is no insulation to become punctured. Single tuned-circuit resonance transformers are superior to coupled tuned-circuit Tesla coils. Resonance transformers, oscillator circuits, power tubes, power supply and coil construction are described. X-ray production, and ion acceleration are outlined.

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