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."<ref>^{Quick Study "Electronics 1, Part 2"}</ref>

The use of an integrator circuit is the opposite of a differentiator circuit. In other words, If you have a triangle wave input and you differentiate it you will get a square wave output. If you run the square wave as the input to an integrator circuit you will end up with the triangle wave for the output<ref>^{Scherz, P: Practical Electronics for Inventors 2nd ed, page 545.} </ref>. The resistor ($R_{2}$) is used to provide feedback<ref>^{Feedback_in_Amplifiers}</ref>. 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)

Reviewers

Greg Fong Shepherd,Victor

Sources

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