blob: 2c0bf2960cb6a1936103d227f95c1a248cddcb8e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
//=====================================================================================
//Chapter 13 example 5
clc;clear all;
//variable declaration
N = 1; //number of turns on search coil
Rc = 0.025; //resistance of search coil in Ω
Nw = 1.5*10^-4; //number of wb-turns required for deflection of 1 division
M = 120000; //reluctane of magnetic circuit
MMF = 8000; //magnetic circuit is excited in ampere-turn
f = 1.5*10^-4; //fluxmeter without shunt (K/N = phi/theta)
theta =120;
//calculations
phi = (MMF/(M)); //flux produced in WB
//phi = ((Rs+Rc)/Rs)*((K*theta)/N)
Rs = (Rc*f*theta)/(phi-(f*theta)); //resistance of shunt in Ω
//result
mprintf("resistance of shunt = %3.2e Ω",Rs);
|