Monday, April 11, 2011

jawapan ca2 lab

CALCULATION

By using capacitor value = 0.01µF and measured resistance = 0.987kΩ :

Zc = -j

wC

= -j1591.6Ω

ZT = R//Zc

= (1.0k)( -j1591.6)

1.0k + (-j1591.6)

= 716.97-j450.47Ω

IS(p-p) = E/ZT

= 8 / (716.97 – j450.74)

= 9.45 < 32.14° mA

IR(p-p) = VR / R

= 7.6 / 1.0k

= 0.0076 A

= 0.0076<0˚

IC(p-p) = VC / ZC

= 7.6<0˚ / (-j1591.6)

= 0.00478<90˚ A

RS measured = 9.9Ω and VRs(p-p) = 0.48V

D1 = 1 x 10ˉ4 D2 = 25µs

The angle between IR and IS :

= 25µs x 360°

1 x 10ˉ4

= 90˚

IS(p-p) = VRs / RS

= 0.48V / 9.9

= 0.0483<0˚A