S stryker12 New Member Jun 12, 2019 #1 Could someone please walk me through the math of how R1 fits into the the final output voltage? Without it, my simulation produces a lot of noise and oscillations.
Could someone please walk me through the math of how R1 fits into the the final output voltage? Without it, my simulation produces a lot of noise and oscillations.
rjenkinsgb Well-Known Member Most Helpful Member Jun 12, 2019 #2 As I suggested and Ronsimpson said in answer to your previous question, you need a series resistor connected to the opamp output. You should never connect an op amp output directly to a capacitive load without a series resistor. Until you have a resistor there, the results will be unpredictable. ps. The resistor values you are using are all rather low for the majority of opamps, you should increase then by a factor of five or ten.
As I suggested and Ronsimpson said in answer to your previous question, you need a series resistor connected to the opamp output. You should never connect an op amp output directly to a capacitive load without a series resistor. Until you have a resistor there, the results will be unpredictable. ps. The resistor values you are using are all rather low for the majority of opamps, you should increase then by a factor of five or ten.
Beau Schwabe Active Member Jun 12, 2019 #3 Look up "summation" or "summing" amplifier. This does look like homework though