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The successful integration of a light-weight, high-efficiency power conditioning (PC) unit with an electron bombardment ion thruster using a hollow cathode at JPL has been reported recently. This paper summarizes the presently conceived requirements by which the next generation of PCs should be judged and evaluated. The requirements are formulated in terms of a deep space mission, which implies that...
This paper describes the implementation and initial test results for a unique digital-analog solar array control concept wherein portions of the circuitry are electrically and physically integrated with the solar array subsystem. The concept has been developed to capitalize on the high efficiency and reliability advantages of the shunt regulator while minimizing the attendant thermal dissipation of...
The Pioneer F/G spacecraft is the first to use radioisotope thermoelectric generators (RTG's) for a long duration interplanetary mission. This paper describes the design of the spacecraft power subsystem which meets the unique requirements of such a mission. The primary power source consists of four SNAP 19 RTG's. The 4. 2 volt dc outputs of the RTG's are inverted to higher voltage ac by four inverters...
The performance requirements and design approach used to develop the Intelsat III dual TWT power supply are discussed. In addition, final acceptance test performance data are examined. The dual TWT power supply described here provides power regulation and certain control functions for a 0.1 watt (R.F.) driver and a 12 watt (R.F.) power amplifier operating at 4 GHz. The supply operates from a spacecraft...
Various DC-DC converter input filter requirements as applied in spacecraft power processing equipment, are reviewed with respect to the spacecraft, its power source and filter loads. The conflicting implications arising from the requirements are noted. A filter configuration capable of providing a satisfactory overall compromise is presented. Various design aspects for converter input filters are...
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