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PRÁCTICA NÚMERO 10
TEOREMA DE THÈVENIN
Comprobar experimentalmente el teorema de Thèvenin aplicándolo a la resolución de circuitos de corriente continua.
A) Medida de ETh
Montando el circuito de la figura, poner el polímetro como voltímetro y medir la diferencia de potencial entre B y C, teniendo en cuenta que:
R1= 430 O R2= 1.1 kO R3= 1.1 KO
R4= 510 O R5= 360 O
El valor obtenido es:
V BC = 2.06 V
VAD=5.09 V
Medida de I
En el circuito de la figura, poner el polímetro como amperímetro y colocándolo como en la figura, medir la intensidad que pasa por R5
El resultado obtenido ha sido el siguiente:
I= 2.04 mA
Medida de Rth
Montando el circuito de la figura, y utilizando el polímetro como óhmetro, la medida de la resistencia entre los puntos M y N ha sido el siguiente:
R Th = 660 O
Éste es el valor de la resistencia equivalente de Thèvenin RTh.
· CUESTIONES:
1) Obtener mediante la expresiones teóricas E th , R Th y la intensidad I que circula por R 5 utilizando las ecuaciones:
Comparar los resultados teóricos obtenidos en la cuestión anterior con los resultados experimentales, teniendo en cuenta los errores cometidos en ambos casos.
TEÓRICO
PRÁCTICO
E TH (V)
2.047ð 0.49
2.06ð 0.01
I (mA)
2.039ð 0.072
2.04ð 0.01
R TH ( O )
657.59ð 74.78
660ð 1
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Enviado por: Antonio Oliver Idioma: castellanoPaís: España