Calculo De Ampermetro

AMPERMETRO.
El amperímetro que a continuación se fundamenta esta diseñado para tres tipos de escalas 3mA, 30mA, 300mA.
Para la escala de 3mA:
rshunt= R1+R2+R3.
VG = Vshunt.
Rs=ImRmIt-Im=(1.27mA)(139.3)(3-1.27mA)=176.9111.73=102.26Ω
R1+R2+R3=102.26Ω "ecuacion 1"

Para escala de 30mA.
Rshunt= R2+R3.
Rs=Im RmIt-Im=1.27mA139.3+R13-1.27mA=0.04420139.3+R1=6.15706+0.04420R1=Rs
-0.04420R1+R2+R3=6.15706 "ecuacion 2"
Para escala de 300mA.
Rshunt = R3.
Rs=ImRmIt-Im=1.27mA139.3+R1+R23-1.27mA=(4.25133x10-3)(139.3+R1+R2)
R3=0.59221+4.25133x10-3R1+4.25r133x10-3R2
-4.25133x10-3R1-4.25133x10-3R2+R3=0.59221 "ecuacion 3"

Cálculos:“determinante”
111-0.0442011-4.25133x10-3-4.25133x10-31 102.266.157060.59221
1+1.8790x10-4-4.25133x10-3--4.25133x10-3-4.25133x10-3-0.04420
0.9959+0.05270=1.0486
Para R1:102.26116.15706110.59221-4.25133x10-31
102.26-0.026175+0.59221-0.59221-0.43474+6.15706
102.8260-6.31453)=96.51141.0486=92.03
R1 = 92.03Ω
Para R2:
1102.261-0.044206.157061-4.25133x10-30.5922116.15706-0.02617-0.4347--0.02617+0.59221-4.5198
5.69619+3.95376=9.649951.0486=9.202
R2 = 9.202Ω
Para R3:
11102.26-0.0442016.15706-4.25133x10-3-4.25133x10-30.59221
0.59221+0.01921-0.02617--0.4347-0.02617-0.026170.58525+0.48704=1.072291.0486=1.022Ω
Volmetro
Para la escala 3v
Vg=vshunt
Is= im rmrs = (139.3)(1.27mA)102.26=1.73×10-3
IT= Im + Is= 1.27mA + 1.73mA = 3mA
RT= 3v3mA=1000Ω
Ra= RT – req= 1000 – 58.97=941.03Ω

Para escala de 30v
RT= VTIm=303mA=10000Ω
Rb= RT- Req3 - Rq
Rb= 10000 – 58.97 – 941.03
Rb= 9000Ω

Para 300v
RT= VTIT=3003mA=100000Ω
Rc= 100000 – 58.97 – 9000 – 941.03
Rc= 90000ΩAmpermetro y volmetro

















Puente de Winston