Lecture_15 - What occurs in positive and negative wave?...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Operational amplifier circuits CHM6158C - Lecture 15 Mar 22 Notes from Horowitz, Hill; The Art of Electronics , Chapter 4 reminder about op-amps (discussion section) slew rate more op-amp circuits
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Definition Slew rate Source: http://www.falco-systems.com
Background image of page 2
3 Peak value of input waveform capacitor is charged up – holds voltage value Very simple design (not as reliable) V out = max V in Better design How much voltage gain does this device have?
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Sample and hold (S/H) circuit Only sample voltage when FET (field effect transistor) is ON (+15V) Why is voltage maintained during hold? Why is voltage drooping? May go to digital input for digitizer – more time to digitize Fig. 4.41
Background image of page 4
5 Rectifier circuit
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: What occurs in positive and negative wave? What is the total gain? 6 Rectifier circuit http://sound.westhost.com/appnotes/an001.htm (mistake on this website though) Which half-wave is transmitted where? 7 Explain what happens here 8 Integrating circuit ) / ( / dt dV C R V out in − = ∫ + = c dt V RC V in out 1 9 Single-supply dc amplifier How do you indentify that this op-amp cannot have V out < 0 V? 10 Comparator Above trigger point: V out = HIGH Below: V out = LOW Feedback makes triggering less noisy 11 Hysteresis Hysteresis = refers to memory in system; change in input voltage not immediately reflected in output voltage...
View Full Document

This note was uploaded on 07/30/2011 for the course CHM 6158 taught by Professor Polfer during the Spring '11 term at University of Florida.

Page1 / 11

Lecture_15 - What occurs in positive and negative wave?...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online