NASA-LLIS-0414
Lessons Learned - Exciter RF Output Degradation on Mariner Mars '71 Caused by Emitter-to-Base Zenering in RF Transistors (~1971)
active, Most Current
| Organization: | NASA |
| Publication Date: | 26 June 1996 |
| Status: | active |
| Page Count: | 3 |
scope:
Abstract:
Because two RF transistors were overdriven, Mariner 9 exciter RF output showed slow and continual degradation throughout the mission. Short-term tests of RF circuits may not be sufficient to rule out zenering, and testing may be complicated by "healing" during the off period.
Document History
NASA-LLIS-0414
June 26, 1996
Lessons Learned - Exciter RF Output Degradation on Mariner Mars '71 Caused by Emitter-to-Base Zenering in RF Transistors (~1971)
Abstract:
Because two RF transistors were overdriven, Mariner 9 exciter RF output showed slow and continual degradation throughout the mission. Short-term tests of RF circuits may not be sufficient...
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