teckie
Newbie level 1
ac signal offset -patent
Hi there, I referred to a post in 2005 on setting DC offset voltage.
I have the following problem. I am trying to offset my AC signal from (-2V to 2V) to ( 0V to 4V)
Currently I am not using op-amp to offset my AC signal. Instead, I will be using capacitor and resistors.
The frequencies that I have to read will be ranging from 0hz to 3khz.
Therefore using the formula f= 1/2*pi*R*C.
I have derived R = 4Mohm and C = 470uF. Due to the lack of items, this is the best combi i can find.
I have attached my circuit to this topic. Hope someone can help me with this. I spent a day trying to find out what happened.
Thanks guys.
Hi there, I referred to a post in 2005 on setting DC offset voltage.
I have the following problem. I am trying to offset my AC signal from (-2V to 2V) to ( 0V to 4V)
Currently I am not using op-amp to offset my AC signal. Instead, I will be using capacitor and resistors.
The frequencies that I have to read will be ranging from 0hz to 3khz.
Therefore using the formula f= 1/2*pi*R*C.
I have derived R = 4Mohm and C = 470uF. Due to the lack of items, this is the best combi i can find.
I have attached my circuit to this topic. Hope someone can help me with this. I spent a day trying to find out what happened.
Thanks guys.