Recent content by Rob119

well I am just modeling the speaker with an 8 ohm resistor and taking measurements, but I will point that out. After redoing the calculations with the 75 ohm output resistance my transfer function is a mess... i don't know what to make of it. the lab is for a class but you do it at home.. and...

interesting didnt think of that... an lm741 has ~75 ohms output impedence (typically) until after like 30 kHz when it becomes much larger. ill see if I can redo some calculations taking that output impedance into consideration.

http://www.flickr.com/photos/61432156@N02/5593767202/ Ok so I'm trying to find the transfer function relating voltage across the 8 ohm resistor (speaker) with the input voltage for the circuit shown above... The two op amps simply provide a gain of 3... and by simple voltage division I am...