Abstract: A method and system for injecting a pulsed radio frequency signal into a fluid-containing system in order to create and propagate an electromagnetic field throughout the fluid-containing system. The electromagnetic field may be used to prevent the formation and build-up of scale in the fluid-containing system and/or to prevent the proliferation of bacteria within the fluid-containing system. The method and system may also be used to inject a pulsed radio frequency signal at a number of points in a fluid-containing system, or to inject a pulsed radio frequency signal to a number of independent fluid-containing systems.

Abstract: A variable capacitor power supply for a high-power, industrial magnetron is powered directly from a conventional, public-service, 4,160 volt and higher power line. The magnetron's output is removably attached to a tractor trailers or train boxcar fabricated as a microwave work chambers. Microwave work chambers are configured to dry waste, burn dried waste, enhance chemical processes, fix free nitrogen, burn waste metal, reclaim component metals from mixed waste metal, and for gasification, pyrolysis, and plasma waste disposal. Alternately, the microwave power supply is removably connected to an underground cave, configured as a microwave oven chamber, to microwave waste therein. The microwave power supply is located in the basement of a high rise building designed to convert the high rise building waste into heat and electricity.

Abstract: A high-voltage oscillator including a first normally-on switch in series with a resonant circuit, a second normally-on switch in parallel with the resonant circuit, and a control circuit preventing the simultaneous conduction of the two switches.

Abstract: An ultrasonic generator, particularly for use in ultrasonic cleaning systems, provides a constant ultrasonic power output for a cleaning tank or chamber. A generator output stage fed from an unsmoothed mains power supply receives signals from an oscillator via a pulse-width modulation circuit. A power control feedback loop monitors the mains current, or alternatively the output signal from the output stage, and provides a compensation signal to the pulse-width modulation circuit. A frequency control feedback loop senses the current in the output from the output stage and tunes the generator for maximum current in this output.

Abstract: A device mounted on a power transmission device of a vehicle is utilized for transmitting an RF signal when a predetermined parameter exists in the power transmission device wherein the RF signal is capable of being received at a remote location. An electromagnetic transducer provides alternating voltage as power which is applied to an oscillator including a crystal filter, a junction field effect transistor and a resistor. The alternating voltage is applied across a drain and a source of the junction field effect transistor. The crystal filter is connected between the drain and the gate of the junction field effect transistor while the resistor is connected between the gate and the source of the junction field effect transistor. A wire antenna has a first end which is connected to the drain of the junction field effect transistor and a second end which is connected to the source of the junction field effect transistor to prevent transmission of any RF signal until the predetermined parameter is exceeded.

Abstract: A high frequency power oscillator is keyed on and off to provide high frequency signal bursts under the control of a pair of timers whose duty cycles are simultaneously and proportionally adjusted so that the signal bursts are constantly centered about the peak power point regardless of variations of the duty cycles. The timers and related circuits for generating control signals are low voltage circuits, whereas the power oscillator is a high voltage circuit, a simple interface structure being provided therebetween.

Abstract: A high frequency power oscillator is keyed on and off to provide high frequency signal bursts under the control of a pair of timers whose duty cycles are simultaneously and proportionally adjusted so that the signal bursts are constantly centered about the peak power point regardless of variations of the duty cycles. The timers and related circuits for generating control signals are low voltage circuits, whereas the power oscillator is a high voltage circuit, a simple interface structure being provided therebetween.