Ampliacion De Escala Del Voltimetro.docx
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P= V*I cosϕ Cosϕ = P/( V*I) P= W V= V I= A
Ampliacion de escala del voltímetro
V
Rint
R=1,98Ko 20mv
20v
200v
Ife Vfe= Ife* ri = 10mA* 2ohm=20 mV V= 20v V- Vfe= 20v-20mv= 19800mv R= Vx/Ife= 19,800 v/10mA=1,98Kohm
ri
R=19,18Ko
V-Vfe= 200000mV-20mV=199980mv Rx=Vx/10mA= 199,980V/10mA= 19,998Kohm Rc=Rx-Ra=19,998Kohm-1,98Kohm= 18,18kohm
Ampliacion de escala del voltímetro
V
Rint
R=1,98Ko 20mv
20v
200v
Ife Vfe= Ife* ri = 10mA* 2ohm=20 mV V= 20v V- Vfe= 20v-20mv= 19800mv R= Vx/Ife= 19,800 v/10mA=1,98Kohm
ri
R=19,18Ko
V-Vfe= 200000mV-20mV=199980mv Rx=Vx/10mA= 199,980V/10mA= 19,998Kohm Rc=Rx-Ra=19,998Kohm-1,98Kohm= 18,18kohm
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