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25 lines
496 B
25 lines
496 B
checking the given example:
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41200 * (8.2 - 1.245) 286546
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41200 * 0.000003 + 1.245 == 1.3605
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(1.3 - 1.245 ) * 12400 == 682
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(12400 * .000003 ) + 1.245 == 1.28
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682 / 1.28 == 532
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so lowest resistor value must be 500 about...
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(4.2 - 1.245) * 12400 == 36642
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\ 1.28 == 28626 so 28700 (use 1%)
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(6 - 1.245) * 12400 == 58962
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/ 1.28 == 46064
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EDIT: this should be let's say 6.9 as the float voltage. (13.8 / 2)
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so
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(6.9 - 1.245) * 12400 == 70122
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/ 1.28 == 54782
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so 54.9K (is the closest E series)
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