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electronics/capacitor_equivalence.py
53 строки
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Mary-0165
Capacitor equivalence algorithm (#9814)
26 окт 2023, 11:10
Не верифицирован
26 окт 2023, 11:10
e791a20
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# https://farside.ph.utexas.edu/teaching/316/lectures/node46.html from __future__ import annotations def capacitor_parallel(capacitors: list[float]) -> float: """ Ceq = C1 + C2 + ... + Cn Calculate the equivalent resistance for any number of capacitors in parallel. >>> capacitor_parallel([5.71389, 12, 3]) 20.71389 >>> capacitor_parallel([5.71389, 12, -3]) Traceback (most recent call last): ... ValueError: Capacitor at index 2 has a negative value! """ sum_c = 0.0 for index, capacitor in enumerate(capacitors): if capacitor < 0: msg = f"Capacitor at index {index} has a negative value!" raise ValueError(msg) sum_c += capacitor return sum_c def capacitor_series(capacitors: list[float]) -> float: """ Ceq = 1/ (1/C1 + 1/C2 + ... + 1/Cn) >>> capacitor_series([5.71389, 12, 3]) 1.6901062252507735 >>> capacitor_series([5.71389, 12, -3]) Traceback (most recent call last): ... ValueError: Capacitor at index 2 has a negative or zero value! >>> capacitor_series([5.71389, 12, 0.000]) Traceback (most recent call last): ... ValueError: Capacitor at index 2 has a negative or zero value! """ first_sum = 0.0 for index, capacitor in enumerate(capacitors): if capacitor <= 0: msg = f"Capacitor at index {index} has a negative or zero value!" raise ValueError(msg) first_sum += 1 / capacitor return 1 / first_sum if __name__ == "__main__": import doctest doctest.testmod()