Integrator Amplifier

Amplifiers

Integrator

Graph of a typical Integrator Amp circuit (drawing redrawn by Ben Henry)

The circuit at right integrates the input voltage $V_{in}$ by using an Amplifier.

$V_{out}={\frac {-1}{R_{1}*C}}\int V_{in}dt$

"$R_{2}$ ; Provides negative feedback for low output impedance needs. But it also distorts the output."¹

The use of an Integrator circuit is the opposite of a Differentiator circuit. In other words, If you have a "^^^" style input and you Differentiate it you will get a "square sine wave" output. If you run the "square sine wave" as the input to an Integrator circuit you will end up with the "^^^" for the output³. The Resistor ($R_{2}$) Is used to provide feedback² of the output DC voltage. Without this, circuit wouldn't perform as calculated because of the un-ideal conditions of real life.

Contributers

--Benjamin.henry 23:15, 10 January 2010 (UTC)

Sources

¹ Quick Study "Electronics 1, Part 2"

² Feedback_in_Amplifiers

³ Practical Electronics for Inventors (p545, 2nd edition)