Abstract: A gas discharge lamp includes a base configured to receive electrical power from a power source and a high frequency ballast electrically connected to the base and configured to convert the electrical power to a high frequency AC waveform for driving a gas discharge tube. The gas discharge tube is configured to receive the high frequency AC waveform and emit UV light by passing the high frequency AC waveform through a mixture of gases contained within the gas discharge tube and to emit UV photons in response. A visible light emitting surface has a glass envelope of different geometry than the gas discharge tube and a phosphor coating is placed on the inside of the glass envelope. The glass envelope seals a volume around the gas discharge tube that is at least partially evacuated.

Abstract: A gas discharge lamp is driven with a constant current square wave from a current transformer where the number of volt-microseconds are designed such that at the start of each square wave, the voltage rises to the required ionization potential for the lamp, while the plasma has not yet started to conduct. As soon as the lamp ionizes the gas within the lamp and current flows, the voltage drops and current flows at the desired level. The current level is set to prevent the input of excessive power pulses into the lamp, to reduce the creation of infrared photons. In addition, the plasma is driven at this current level almost continuously (with reversing polarity), which does not allow the plasma time to cool down. Consequently, the lamp becomes a more efficient light emitter, thereby requiring less energy to achieve the same light output.

Abstract: A cabinet light system includes integral male and female connectors to allow the interconnection of multiple units directly or with an interconnection cord. The cabinet light system includes a lamp connection system with a florescent strip lamp, a male interconnector, a female interconnector, an enclosure channel, and a ballast. The male and female interconnectors are connected to opposite ends of the enclosure channel and are electrically connected to the ballast to provide power to the ballast.

Abstract: A high frequency sinusoidal wave is generated and applied directly to a gas discharge lamp in multiple phases in a power efficient electronic ballast. Uniting a high frequency current fed oscillator with a transformer, where direct current may be applied to the center tap of the transformer primary winding through an appropriately sized inductor to enable the impression of a sinusoidal alternating current at the secondary winding. This sinusoidal alternating current is applied directly to a gas discharge lamp. Feedback from the transformer controls the switching of the oscillator at resonant frequency.

Abstract: A gas discharge lamp includes an outer glass tube having a phosphor coating on an inner surface of the outer glass. An inner glass tube is positioned inside the outer glass tube and formed of glass that is transparent to UV light. The inner glass tube contains a plasma-forming gas within an inner volume of the glass tube. A high frequency ballast is integral to the outer glass tube and configured to provide a high frequency AC waveform for driving electrodes configured for energizing the plasma-forming gas within the inner glass tube to form plasma paths therein.

Abstract: A high frequency sinusoidal wave is generated and applied directly to a gas discharge lamp in a power efficient electronic ballast. Uniting a high frequency current fed oscillator with a transformer, where direct current may be applied to the center tap of the transformer primary winding to enable the impression of a sinusoidal alternating current at the secondary winding. This sinusoidal alternating current is applied directly to a gas discharge lamp. Feedback from the transformer controls the switching of the oscillator at resonant frequency.

Abstract: A compact, robust, wear resistant, and high performance electrically insulating gap sub for use with borehole EM Telemetry is disclosed. In one embodiment, the gap sub may include an externally threaded mandrel separated from an internally threaded housing by a dielectric material. Additionally, some embodiments may include an external gap ring for separating the upper and lower electrical halves of the sub which offers structural support, acts as the primary external seal, and provides an abrasion resistant non-conductive length on the exterior. Some embodiments may include torsion pins to prevent the possible unscrewing of the dielectric filled threaded sections should the dielectric material become damaged or weakened.