general_python_programming/reactance.py

42 lines
970 B
Python

import math
j = 1j
def model_c(w,C):
Z = 1.0/(j*w*C)
return Z
#
# Model the reactance of an RC parallel circuit.
#
def model_r_c_p(w, R, C):
# Z2 is the straight parallel equation that python can handle
Z2 = (1.0)/((1.0/R)+(1.0)/((1.0)/(j*w*C)))
# Z is the equation easier to implement in C (just rearranged)
# i.e. it has a real divisor
Z = ((1.0/R)-j*w*C)/((1.0/R)**2 + (w*C)**2)
#return Z2,Z for comparison return both and check they give the same results
return Z#, Z2
# return magnitude of RC in parallel
# from https://www.translatorscafe.com/unit-converter/EN/calculator/parallel-rc-impedance/
#
def model_k(w, R, C):
Z = 1.0/(math.sqrt((1.0/R)**2 + (w*C)**2))
return Z
R = 220
C = 10E-6
for f in range (1,3000000, 20):
print f
w = 2 * 3.142 * f
Z = model_r_c_p (w,R,C)
#Z = model_c(w,C)
#Z = model_k(w,R,C)
#print "at freq", f, Z#, abs(Z)
print "at freq", f, Z, abs(Z)
#print Z