Class Note
Graph of Resistor and Inductor and Capacitor relate to current.
Key: change capacitor and inductor to the ohm's format
Zc=1/jwc
ZL=jwL
In the pre-lab above we calculate the Zth from a) ~ c).
We use 47Ω in each circuit and 1uH for inductor and 0.1uF for capacitor. These resistor circuit we change all elements to phaser when AC is supplied. Under the inductor and capacitor both that voltage leads the current by 90 degree. Each circuit we supplied an AC 2V with frequency 1kHz, 5kHz, and 10kHz.
1kHz
5kHz
On the first circuit we notice the voltage and current didn't change any when frequency
On second circuit we notice the voltage is increase when frequency increasing but the current decrease when frequency increase.
On third circuit we notice the voltage decrease a little when frequency increase and current increase at the same ratio as frequency increase.
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Circuit Setpup
a)
b)
c)
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At here we try to match the experimental value to the theoretical value by calculate the Z and the result pretty close to the theoretical value.
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Class Note
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