# Sinusoidal Circuit.

Discussion in 'Homework Help' started by bostonflunkie, Feb 21, 2005.

1. ### bostonflunkie Thread Starter New Member

Dec 22, 2004
7
0
hi,
i need help to draw this circuit, please...

v(t)= 35 cos (150t+25deg)
v(t)= 20 cos (150t+50deg)

thanks.

2. ### hgmjr Moderator

Jan 28, 2005
9,030
214
If you have access to Microsoft EXCEL. I recommend you use it to graph the functions? I have had good success with this approach.

Good Luck

3. ### bostonflunkie Thread Starter New Member

Dec 22, 2004
7
0
i can graph it on my calculator
i need to layout functional circuit with real component on the bread board
can you help?????
thanks...

Dec 12, 2004
152
0

5. ### bostonflunkie Thread Starter New Member

Dec 22, 2004
7
0
like i said i can draw it too, i need to build the circuit with real components...

6. ### dragan733 Senior Member

Dec 12, 2004
152
0
In the attachment are the calculations for the circuit in series: R, C and signal generator
One mesures the voltage across the capacitor to get the equations:
v(t)= 35 cos (150t+25deg)
v(t)= 20 cos (150t+50deg)

7. ### dragan733 Senior Member

Dec 12, 2004
152
0
After I saw that there was a fault. It needs to choose a RL circuit to get the equations:
v(t)= 35 cos (150t+25deg)
v(t)= 20 cos (150t+50deg)

When one choose RC circuit then the equations would be:
v(t)= 35 cos (150t-25deg)
v(t)= 20 cos (150t-50deg)

Then again new calculations done in the attachment: rl.pdf

8. ### bostonflunkie Thread Starter New Member

Dec 22, 2004
7
0
thans a lot it is exactly what i needed i am working on it and my values are much different than yours, i hvae 2.76 ohm resistor and j5.90 capacitor actually i made a mistake in my original posting equation the correct equation is
v(t)= 35 cos (150t+25deg)
i(t)= 25 cos (150t+50deg)
and i am not suppose to use function generator only resistor, caps or inductor
this is what circuit should look like.

35V |-------------------/\/\/\/\--------------| |---------|
(AC) | 25A |
------------------------------------------------------- |
any help will be greatly appreciated....