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NASA-LLIS-0414
Lessons Learned - Exciter RF Output Degradation on Mariner Mars '71 Caused by Emitter-to-Base Zenering in RF Transistors (~1971)
Year: 1996
Abstract: 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.
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.
Subject: Hardware
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:39:34Z | |
| date available | 2017-09-04T17:39:34Z | |
| date copyright | 06/26/1996 | |
| date issued | 1996 | |
| identifier other | DTBEQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/162587 | |
| description abstract | 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. | |
| language | English | |
| title | NASA-LLIS-0414 | num |
| title | Lessons Learned - Exciter RF Output Degradation on Mariner Mars '71 Caused by Emitter-to-Base Zenering in RF Transistors (~1971) | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1996 | |
| contenttype | fulltext | |
| subject keywords | Hardware | |
| subject keywords | Parts Materials & Processes | |
| subject keywords | Test & Verification |