Index of /Op-Amps & Comparitors/Opamps
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03/06/2014
Still online, we are. The code for this website is getting old, but still works well as far as I've seen. I may update it with new code and new features eventually, one day when I have both free time and focus. Until then, the content is still useful, I'm keeping it online. Comments and donations are welcome, but include your email address if you want a reply.


09/04/2010
Ideas for the future of the site -
Here are some ideas I've been brainstorming. I don't think to much of the site should change, because it has been successful all these years with very little change. still nearly 1000 visitors a day to the site!
  • donations - I think it might be time to make some changes to the donations. I would rather see people get a lifetime membership and not have to worry about an expire date. here's an idea, a smaller recurring payment monthly, or 4 times a year, then maybe offer a second option, donate enough to cover the cost of the server for one month and you'll get a lifetime membership that never expires.
  • automated account creation - the membership process should be automated. I rarely hear a complaint about anything, but I don't think people feel so safe emailing me a username and password to set up an account. I think people may feel more safe dealing with an automated system. make a donation, then type your account into right in to the computer and have it set up on the spot.
  • members only forum - the site doesn't seem to need a full forum, but it could still benefit from a single simple board or mailing list, maybe. still optional, but maybe only available to members. non-members wouldn't be able to post on or see the forum. for those who donate to openly communicate.
You can send me your comments in the form above. I'm not putting any work into these changes without getting feedback from you!
If we have any web developers out there, we'd love your help! come on, my birthday's tomorrow!


12/20/2009
Better forum? -
We are currently using vbulletin, but maybe there's a simpler alternative that would better fit the site. What do you think of this one? http://schematicforums.com/seo/ Please let us know what you think, keep vBulletin, or switch to SEO. Comment box is below.


09/29/2009
ideas or comments?
please send us your comments or suggestions or any ideas you might have for the site. this is the easiest way for you to let us know what you think. just type in the box above and send.

Thank you, everyone who has helped support the site over the years. you've done your part, now help me do my part to improve the site with your input.




11/25/2009
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05/07/2008
new server -
this week, we've moved the website to a bigger faster server. we have doubled the weekly download limit to 20mb and are now allowing hot-linking, so more people can get the documents they're looking for. this new server is still relatively low cost, but is a bit more to pay for each month then the last server. we still need your donations to help with this. thank you all who have supported the site and community!!!


01/24/2008
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Last Accessed Size  File
06-24-19 387924  3080 Circuits.pdf
06-24-19 4329  741peak.gif
06-24-19 79780  A Cookbook Approach to Single Supply DC-Coupled Op Amp Design.pdf
06-24-19 39011  AC COUPLING INSTRUMENTATION AND DIFFERENCE AMPLIFIERS.pdf
06-23-19 105232  Absolute_Value_Mancini.jpg
06-24-19 114021  Adjustable Slew Rate Amplifier.pdf
06-24-19 50869  Analog Divider and Multiplier.pdf
06-24-19 271250  Analog Divider.pdf
06-23-19 238349  Audio Applications Of Linear Ics.pdf
06-24-19 330294  Avoiding Noise and Power Problems with Unused Op Amps.mht
06-23-19 953515  Avoiding Passive Component Pitfalls.pdf
06-23-19 22781  Broad-Band-Peak-detector-using-LM393.jpg
06-24-19 39727  Burr Brown Ac Coupling Instrumentation And Difference Amplifiers - Ina117 App Note.pdf
06-24-19 33089  CLASSICAL OP AMP OR CURRENT-FEEDBACK OP AMP.pdf
06-24-19 111783  Calculating Sum and Difference Networks.pdf
06-23-19 624596  Choosing Op Amps for DC Servo.mht
06-24-19 197880  Common Mode Voltage Cancelling Amplifier.pdf
06-23-19 314906  Controllable Inverting-NonInverting Circuit.pdf
06-24-19 73368  Controlling Opamp gain with one potentiometer.pdf
06-24-19 2714463  Current Amps and Feedback.mht
06-24-19 139250  Current Feedback Amplifier Do's & Don'ts.pdf
06-23-19 71477  Current Source Enables Op Amp's Output to go to Ground.pdf
06-24-19 21893  DOUBLE THE OUTPUT CURRENT TO A LOAD.pdf
06-23-19 49649  Dc Level Clamp.pdf
06-24-19 534241  Design Trade-Offs for Single-Supply Op Amps.mht
06-24-19 322527  Designing With Opamps.PDF
06-24-19 502603  Designing with monostable multivibrators.pdf
06-24-19 94427  Determining the Dynamic Range of Logarithmic Amplifiers.pdf
06-24-19 31475  Differential input & output circuit on a single supply.pdf
06-24-19 111466  Digitally Programmable Instrumentation Amplifier.pdf
06-23-19 89814  Dual Feedback Amplifier Zeros Comparitor Hysteresis.pdf
06-24-19 105727  Dual Op Amp Instrumentation Amp.pdf
06-24-19 1117886  Dual Polarity Hysteresis with a Single Op Amp.pdf
06-24-19 378663  EPOT Applications Gain Adjustment in Op-Amp Circuits.mht
06-24-19 315051  Engineer's Stethoscope.pdf
06-24-19 353959  FET Op-Amp Applications.pdf
06-24-19 205353  Feed it Forward.pdf
06-23-19 4256067  Feedback Amplifiers Commentary.pdf
06-24-19 20693  Feedforward Amplifier.pdf
06-24-19 477139  Flexible Gain Programmable Op-Amp.pdf
06-24-19 63247  Full Wave Rectifier with Averaging Filter.pdf
06-23-19 141189  Fully Differential Op Amps Made Easy.pdf
06-24-19 73130  Get More Power Out of Dual or Quad Op-Amps.pdf
06-23-19 373433  Getting Started with Op-Amps.pdf
06-24-19 2103557  Handbook Of Op-Amp Apps.pdf
06-24-19 24546  High Input Impedance Integrator.pdf
06-24-19 16918  High Performance Audio Op-Amp Quick Reference.pdf
06-24-19 55512  High Quality Instrumentation Amplifier.pdf
06-24-19 5348029  High Speed Amplifier Techniques from Linear Technology.pdf
06-24-19 250297  How to Use Transconductance Operational Amplifiers Errata.pdf
06-24-19 149482  Improved Clamping Amplifier.pdf
06-23-19 141029  Increasing opamp output voltage swing.pdf
06-24-19 283126  Integrators.pdf
06-24-19 453017  Interfacing LVDS.pdf
06-24-19 48167  LM324 Interface Circuits.pdf
06-24-19 118776  Level Shifter to Build a High Voltage Op-Amp.pdf
06-23-19 492850  Level Shifter.pdf
06-24-19 309618  Log Amps.pdf
06-23-19 56002  Low Cost Logarithmic Amplifier.pdf
06-24-19 16117  Low Drift Integrator.pdf
06-24-19 143525  Low Voltage Micropower Op-Amps.pdf
06-24-19 1068085  Measuring an Op-Amp's Real Time Offset Voltage.pdf
06-24-19 806659  Misc Op Amp Applications Part 4.pdf
06-24-19 12048  Monolithic Sample & Hold.pdf
06-24-19 81966  Multiplying Rc Time Constants With Op-Amps.pdf
06-24-19 202045  National Semiconductor Application Guide For Op Amps.pdf
06-24-19 303251  New Op Amp Ideas.pdf
06-24-19 37629  Obtaining Average Absolute Value.pdf
06-23-19 12166  One Diode Full Wave Rectifier.pdf
06-24-19 148581  One OpAmp Dual Limit Comparitor.pdf
06-24-19 17586179  Op Amp Applications Book.zip
06-24-19 176099  Op Amp Booster Designs.pdf
06-24-19 1012024  Op Amp Circuit Collection.pdf
06-24-19 226444  Op Amp Circuits.mht
06-24-19 186599  Op Amp Injection for Bode Analysis.pdf
06-24-19 803762  Op Amp Noise (2).pdf
06-24-19 202277  Op Amp Noise Analysis.pdf
06-24-19 178743  Op Amp Noise.pdf
06-24-19 68936  Op Amp Power Output Stage.pdf
06-24-19 2963988  Op Amps - Misc.pdf
06-24-19 2061665  Op Amps For Everyone.pdf
06-23-19 115607  Op Amps Quiz.mht
06-24-19 28012  Op Latch.zip
06-23-19 149216  Op amp Characteristics.mht
06-24-19 179622  Op amp Packages.mht
06-24-19 123561  Op amp Voltage Amplifiers.mht
06-24-19 2083840  Op amps for everyone design reference from TI.pdf
06-23-19 1760767  Op amps with capacitive loads.mht
06-24-19 985824  Op-Amp Circuit Collection.pdf
06-24-19 138451  Op-Amp Flip Flops.pdf
06-24-19 7730  Op-Amp Oscillator.pdf
06-24-19 157514  Op-Amps in Pre-Amps.pdf
06-24-19 2291841  Op-amps based full-wave rectifier___ - STMicroelectronics.mht
06-24-19 110486  Op275 Opamp.PDF
06-24-19 315692  Operational Amplifiers Glossary of Key Terms.mht
06-23-19 208651  Operational amplifier models Operational Amplifiers.mht
06-23-19 519401  Operational_Amplifiers_final.pdf
06-24-19 106358  Output Impedance Stuff Part 1.pdf
06-24-19 172723  PC300 - Quiz - Intro to Op Amps.mht
06-23-19 103072  PRECISION ABSOLUTE VALUE CIRCUITS.pdf
06-24-19 147335  PRECISION_ABSOLUTE_VALUE - Basic_Circuit - Circuit Diagram - SeekIC_com.mht
06-24-19 300087  Peak Detectors.pdf
06-24-19 249584  Polarity Indicator.pdf
06-23-19 11478  Precision Half-Wave Ac-Dc Converter.pdf
06-24-19 38111  Precision Rectifier.zip
06-24-19 877358  Precision Rectifiers.pdf
06-24-19 11873  Precision Unity-Gain Half-Wave Rectifier.pdf
06-24-19 655554  Precision full wave rectifier circuit - HQEW_net.mht
06-24-19 85546  Program an Op Amp with a Solid State Resistor.pdf
06-24-19 66463  Programmable inverting - noninverting opamp.pdf
06-24-19 24410  Pulse Train Generator.pdf
06-24-19 163840  Pwm Circuit Uses One Op Amp.pdf
06-24-19 346224  Reduce Distortion with CSP Package opaamps.pdf
06-23-19 59087  Reducing Auto Zero Amplifier Noise.pdf
06-24-19 67901  Remotely Gain Switched Op Amps.pdf
06-23-19 151727  Resistive Feedback Circuits.pdf
06-24-19 145481  Resistor Free Instrumentation Amplifier.pdf
06-24-19 1730787  Resistors in the feedback of a buffer Ask why!.mht
06-24-19 1036809  Rolling Stone Issue 1000 Cover Guide.pdf
06-24-19 17105  Sample & Hold Circuits.pdf
06-24-19 1211107  Sample & Hold with no resistors.pdf
06-24-19 1115508  Sample and Hold Circuits.pdf
06-24-19 4621545  Selecting Op Amps.pdf
06-24-19 671417  Selecting Video Opamps.pdf
06-23-19 29826  Simple Chopper.pdf
06-24-19 379923  Simple Spice Op-Amp Simulation.pdf
06-24-19 55869  Simple Temperature Regulator.pdf
06-24-19 17940  Single device window detector.pdf
06-24-19 153569  Single-supply op amp design.pdf
06-24-19 335382  Single-supply op amp forms noninverting level shifter - Maxim.mht
06-23-19 48634  Slew Limiter.jpg
06-24-19 68944  Some Tips On Stabilizing Op-Amps.pdf
06-23-19 341734  Spare Op Amp Generates Its Own Regulated Negative Supply.mht
06-23-19 217026  Standard Op-Amp Circuits.pdf
06-24-19 83410  Super Precise Precision Rectifier.pdf
06-24-19 124331  Supercharging the 709 Op Amp.pdf
06-24-19 1164004  Suspended Animation.pdf
06-23-19 338507  Temperature Stabilized Log Converter.pdf
06-24-19 425548  The 1537 VCA.pdf
06-24-19 78158  The Full-Wave Rectifier and Averaging Filter - Freecircuits_net.mht
06-24-19 207816  The Gyrator.pdf
06-24-19 124435  Tips On Stabilizing Op Amps.pdf
06-23-19 137506  Tl072 Opamp.PDF
06-24-19 1573936  Top questions on op amp power dissipation – Part 1.mht
06-24-19 83385  Trans-Impedance Amplifiers Noise Issues.pdf
06-24-19 81519  Transimpedance Amplifier Stability.pdf
06-23-19 35589  True RMS Detector.pdf
06-23-19 26132  Tube Op-Amp.jpg
06-23-19 74729  Tube Op-Amp.png
06-24-19 38497  Two Amplifier Integrator.pdf
06-24-19 829267  Understanding opamp input stages.mht
06-23-19 103828  Use The Lm358 Dual, Single Supply Op Amp.pdf
06-24-19 92337  Using Free Amplifiers.pdf
06-24-19 202501  Using supply bootstrapping to reduce distortion in op-amp circuits.pdf
06-23-19 107975  Variable Gain Precision Rectifier.pdf
06-23-19 62313  Very High Input Impedance Op-Amp Circuit.pdf
06-24-19 489343  Voltage Follow and Hold Circuit.pdf
06-24-19 2173092  Voltage to Current Transactor.pdf
06-24-19 1389079  Wideband Peak Detector.pdf
06-24-19 1503006  Working with OTAs.pdf
06-24-19 42478  Zero Crossing Detector.pdf
06-23-19 18725  circuit-peak-detector.jpg
06-23-19 1518  peak.gif

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