Development of high temperature ceramic rectifiers, thyratrons, and voltage regulator tubes final report, jun. 26, 1963 - oct. 7, 1964
Ceramic voltage regulator tubes, gas diodes, and thyratrons
VOLTAGE REGULATOR↗
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Development of high-temperature, gas-filled, ceramic rectifiers, thyratrons, and voltage- reference tubes quarterly progress report no. 1, dec. 15, 1964 - mar. 14, 1965
High temperature ceramic rectifier, thyratrons, and voltage reference tubes for use in nuclear- electric space power systems
TUBE↗
Development of high-temperature, gas-filled, ceramic rectifiers, thyratrons, and voltage- reference tubes quarterly progress report no. 2, 15 mar. - 14 jun. 1965
High temperature ceramic thyratron tube research
THYRATRON↗
High-temperature, gas-filled, ceramic rectifiers, thyratrons, and voltage- reference tubes Quarterly progress report no. 3, 15 Jun. - 14 Sep. 1965
High temperature, gas filled ceramic rectifiers, thyratrons, and voltage-reference tubes
ELECTRON TUBE↗
High temperature zero drop thyratron tube program, phase I Final report
High temperature power conditioning system for thermionic converter generator consisting of thyratrons, transformer, and associated circuits
THYRATRON↗
High-temperature, zero-drop thyratron tube program Quarterly progress report, 1 Apr. - 31 May 1966
High temperature zero drop thyratron tube for thermionic converter generator
THYRATRON↗
Development of high-temperature, gas-filled, ceramic rectifiers, thyratrons, and voltage-reference tubes Final report, Dec. 15, 1964 - Jan. 26, 1966
Development of high temperature gas filled ceramic rectifiers, thyratrons, and voltage-regulator tubes
RECTIFIER↗
Development of high temperature thyratrons for large nuclear electrical space power systems.
High temperature high power gas diodes and thyratrons for large nuclear electrical space power systems, noting parameters of design and performance
NUCLEAR POWER CONVERSION↗
Development of high-temperature vapor-filled thyratrons and rectifiers
High temperature tests on cesium diodes and vapor filled thyratrons
Coolidge, A. W., Jr.↗
High-temperature, gas-filled ceramic rectifiers, thyratrons, and voltage-reference tubes
Thyratron, capable of being operated as a rectifier and a voltage-reference tube, was constructed and tested for 1000 hours at temperatures to 800 degrees C. With current levels at 15 amps and peak voltages of 2000 volts and frequencies at 6000 cps, tube efficiency was greater than 97 percent.
Baum, E. A.↗
Reduction of recovery time in high-temperature cesium vapor thyratrons
Modified structural design of high temperature cesium vapor thyratrons
Coolidge, A. W., Jr.↗
Development and inverter testing of high temperature cesium-vapor thyratrons
Development and inverter circuit tests of high temperature cesium vapor thyratrons
Coolidge, A. W., Jr.↗
Development of high temperature thyratrons for large nuclear electrical space power systems.
High temperature and power gas diodes and thyratrons for nuclear electrical space power systems
Jones, N. D.↗
Development and endurance testing of high- temperature ceramic rectifiers and thyratrons
Development and endurance testing of high temperature ceramic rectifiers and thyratrons
Jones, N. D.↗
High-temperature, long-life thyratron
Thallium and xenon filled thyratron was developed that operates at tube envelope temperatures up to 750 C. This tube performs at peak voltage ratings of 2000 V forward and reverse and at an average current rating of 15 A for up to 11,000 hours.
Baum, E. A.↗
Development of high-temperature, high-current, alkali-metal, vapor-filled ceramic thyratrons and rectifiers quarterly progress report no. 4
Tube diode construction with thoriated tungsten cathode and tubes with barium-system cathodes and with thallium pellets - vapor-filled ceramic thyratons and rectifiers development
RECTIFIER↗
Development of high-temperature, high-current, alkali-metal, vapor-filled, ceramic thyratrons and rectifiers Quarterly progress report
Vapor pressure, anode temperature, and inverse emission effects on thallium filled diode tested with barium cathode
Coolidge, A. W., Jr.↗
A linearly controlled direct-current power source for high-current inductive loads in a magnetic suspension wind tunnel
The NASA Langley 6 inch magnetic suspension and balance system (MSBS) requires an independently controlled bidirectional DC power source for each of six positioning electromagnets. These electromagnets provide five-degree-of-freedom control over a suspended aerodynamic test model. Existing power equipment, which employs resistance coupled thyratron controlled rectifiers as well as AC to DC motor generator converters, is obsolete, inefficient, and unreliable. A replacement six phase bidirectional controlled bridge rectifier is proposed, which employs power MOSFET switches sequenced by hybrid analog/digital circuits. Full load efficiency is 80 percent compared to 25 percent for the resistance coupled thyratron system. Current feedback provides high control linearity, adjustable current limiting, and current overload protection. A quenching circuit suppresses inductive voltage impulses. It is shown that 20 kHz interference from positioning magnet power into MSBS electromagnetic model position sensors results predominantly from capacitively coupled electric fields. Hence, proper shielding and grounding techniques are necessary. Inductively coupled magnetic interference is negligible.
Tripp, John S.↗