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Electronics_Projects_2019
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Electronics_Projects_2019/batterycharge_stationdata/resources/math_notes_lt

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wow
5 years ago
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  1. checking the given example:
  2. 41200 * (8.2 - 1.245)  286546
  3. 

  4. 41200 * 0.000003 + 1.245 == 1.3605 
  5. 

  6. 

  7. 

  8. (1.3 - 1.245 ) * 12400 == 682 
  9. (12400 * .000003 ) + 1.245 == 1.28
  10. 682 / 1.28 == 532
  11. 

  12. so lowest resistor value must be 500 about...
  13. 

  14. 

  15. (4.2 - 1.245) * 12400 == 36642
  16. \ 1.28 == 28626 so 28700 (use 1%)
  17. 

  18. (6 - 1.245) * 12400 == 58962
  19. / 1.28 == 46064
  20. EDIT: this should be let's say 6.9 as the float voltage. (13.8 / 2)
  21. so
  22. (6.9 - 1.245) * 12400 == 70122
  23. 

  24. / 1.28 == 54782
  25. so 54.9K (is the closest E series)