Non Inverting Op Amp
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Rf provides negative feedback to control the gain. The gain depends on Rf and R1.
For the Falstad Circuit Simulation, CTRL+Click Non Inverting Amplifier Gain = 5.7
In options, check European Resistors and uncheck Conventional Current.
Alternatively view Non_Inverting_Amplifier.txt.
Save or copy the text on the web page. Import the saved or copied text into the Falstad simulator.
Here is the new HTML5 Simulator Site.
Parasitic oscillations are caused by unwanted positive feedback, usually at higher frequencies. Lack of decoupling, poor layout and stray capacitance and resistance on prototype boards are all possible causes. This circuit shows some techniques to minimise the risk of oscillation. The feedback capacitor restricts high frequency performance. Some experimentation might be needed to get the right value. In some cases, the circuit will never work if built onto prototype board. A soldered circuit with all component lead lengths minimised might be needed.
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