Capacitors » Historie » Version 12
Maximilian Seesslen, 13.01.2026 17:34
| 1 | 1 | Maximilian Seesslen | h1. Capacitors |
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| 2 | |||
| 3 | 2 | Maximilian Seesslen | On the Oszi no impact could be seen at all. |
| 4 | 3 | Maximilian Seesslen | Bei 100Hz empfieht Copilot: 4700–6800 µF. At the moment it's 250Hz |
| 5 | |||
| 6 | 7 | Maximilian Seesslen | Power measurement is not possible when PWM pulses are visible on input. Or is ADC slow enough? |
| 7 | 3 | Maximilian Seesslen | |
| 8 | 10 | Maximilian Seesslen | At the moment 47µ 6,3x7,7mm; is used, factor 100. |
| 9 | 4 | Maximilian Seesslen | |
| 10 | 2 x 3300µF in series results in 1650µF. |
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| 11 | 6 | Maximilian Seesslen | Biggest 50V-Cap is 1mF (SMD); "List":https://www.tme.eu/de/katalog/elektrolytische-kondensatoren-smd_112341/?onlyInStock=1&assortmentType=internal¶ms=118:1438381,1497186,1438385,1713901,1497187,1438332;120:1437210,1437163,1620883,1529492,1437177,1437183,1511884&productListOrderDir=ASC&productListOrderBy=1000014 |
| 12 | 1 | Maximilian Seesslen | THT gehen bis 4,7mF, sind aber riesig. Smallest 1,5mF still has diameter of 10mm. |
| 13 | 7 | Maximilian Seesslen | |
| 14 | Tantal haben bei so hohen Spannungen viel weniger Kapazität. |
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| 15 | 1 | Maximilian Seesslen | |
| 16 | 10 | Maximilian Seesslen | 1000/250=4ms |
| 17 | 1000/500=2ms |
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| 18 | |||
| 19 | 9 | Maximilian Seesslen | C=(I*t)/(Delta_V) |
| 20 | 1 | Maximilian Seesslen | (0,35*0,004)/3,6=390µF |
| 21 | 10 | Maximilian Seesslen | 1V: 3,8mF |
| 22 | |||
| 23 | Copilot: |
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| 24 | C=0,350*0,002/2=700µF |
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| 25 | |||
| 26 | RC-GLied:1K, 10µF = R*C = 10ms |
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| 27 | 11 | Maximilian Seesslen | |
| 28 | "Filter":https://www.st.com/resource/en/application_note/an4304-how-to-filter-the-input-of-a-highside-current-sensing-stmicroelectronics.pdf |
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| 29 | 12 | Maximilian Seesslen | |
| 30 | (1/(2*PI*2*10Ohm*0,00002F)) = 400Hz |
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| 31 | |||
| 32 | qalc "(1/(2*PI*2*10*0,00002))" |