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20190127 Test Switching PSU
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00 - T1 collector (coil) feedback R7=47kΩ - board.jpg
size: 1024 × 768
2019-01-27 12:50
300038
00 5R, Vout=0.900V - R7=47kΩ - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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00 5R, Vout=1.506V - R7=47kΩ - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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00 5R, Vout=2.096V - R7=47kΩ - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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01 - no T1 collector (coil) feedback R7=removed - board.jpg
size: 1024 × 768
2019-01-27 12:50
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01 5R, Vout=0.896V - R7=removed - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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01 5R, Vout=1.506V - R7=removed - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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01 5R, Vout=2.090V - R7=removed - T1 base voltage vs. output noise.jpg
size: 1024 × 768
2019-01-27 12:50
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02 - R7=removed - board.jpg
size: 1024 × 768
2019-01-27 12:50
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02 5R, Vout=1.5V - R7=removed - T1 base vs. T2 base voltage.jpg
size: 1024 × 768
2019-01-27 12:50
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02 5R, Vout=1.5V - R7=removed - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-27 12:50
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03 - board.jpg
size: 1024 × 768
2019-01-27 14:06
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03 02R Vout=1.010V Vin=5V@040mA - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-27 14:06
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03 13R Vout=0.988V Vin=5V@340mA - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-27 14:06
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03 9R Vout=1.358V Vin=5V@360mA - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-27 14:06
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04 - feedback T2 to T3 R=0Ω - board.jpg
size: 1024 × 768
2019-01-27 14:06
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04a 5R 1.262V - R=0Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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04b 5R 1.262V - R=0Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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04c 5R 1.262V - R=0Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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05 - feedback T2 to T3 R=4k7Ω - board.jpg
size: 1024 × 768
2019-01-27 14:06
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05a 5R 1.262V - R=4k7Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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05b 5R 1.262V - R=4k7Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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06 - feedback T2 to T3 R=560Ω - board.jpg
size: 1024 × 768
2019-01-27 14:06
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06a 5R 1.262V - R=560Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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06b 5R 1.262V - R=560Ω.jpg
size: 1024 × 768
2019-01-27 14:06
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07 - board varying R1 (T1 collector-base).jpg
size: 1024 × 768
2019-01-27 14:42
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07a R1=4k7Ω (in=180mA).jpg
size: 1024 × 768
2019-01-27 14:43
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07b R1=4k7Ω.jpg
size: 1024 × 768
2019-01-27 14:42
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07c R1=1k2Ω (in=170mA).jpg
size: 1024 × 768
2019-01-27 14:42
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07d R1=1k2Ω.jpg
size: 1024 × 768
2019-01-27 14:42
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08a - board- compare T1 saturation.jpg
size: 1024 × 768
2019-01-28 17:04
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08b compare T1 saturation Cout=330µF - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-28 17:04
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08c compare T1 saturation Cout=330µF - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-28 17:04
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08d - board- compare T1 saturation.jpg
size: 1024 × 768
2019-01-28 17:04
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08e compare T1 saturation Cout=100µF - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-28 17:04
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08f compare T1 saturation Cout=100µF - T1 base vs. T2 collector voltage.jpg
size: 1024 × 768
2019-01-28 17:04
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