Hi,
I'm pretty new to electronics, having skimmed though the AAE course notes over the weekend. I'm making a buffer so I can use my line in as an oscilloscope.
This is the circuit I'm will hope to use for each channel. http://www.sciencetronics.com/geocities/electronics/projects/soundcard_osci.html
The reason why I chose this circuit was because it was the simplest one I could find.
Even though the author says it's a voltage follower, what I would like to know is what is the gain of the op amp. Would it be unity? Or does the resistor on the negative feedback loop reduce the gain?
I'm assuming is does reduce the voltage, but I'm not sure how to calculate the voltage wrt gnd at the inverting input. (Unless it's a question of current. However the op amp is not a current-feedback op amp.)
Richard
I'm pretty new to electronics, having skimmed though the AAE course notes over the weekend. I'm making a buffer so I can use my line in as an oscilloscope.
This is the circuit I'm will hope to use for each channel. http://www.sciencetronics.com/geocities/electronics/projects/soundcard_osci.html
The reason why I chose this circuit was because it was the simplest one I could find.
Even though the author says it's a voltage follower, what I would like to know is what is the gain of the op amp. Would it be unity? Or does the resistor on the negative feedback loop reduce the gain?
I'm assuming is does reduce the voltage, but I'm not sure how to calculate the voltage wrt gnd at the inverting input. (Unless it's a question of current. However the op amp is not a current-feedback op amp.)
Richard