The opamp buffer - Arrow Electronics style  - Page 1
Forum section: electronics / general

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: October 12, 2023, 08:50:25 pm
content: https://www.arrow.com/en/research-and-events/articles/fundamentals-of-op-amp-circuitsComedy gold by Arrow Electronics."Students might become puzzled"Ya think?

author: SiliconWizard
author_rank: Super Contributor
timestamp: October 12, 2023, 09:22:21 pm
content: Absolutely excellent!

author: tszaboo
author_rank: Super Contributor
timestamp: October 12, 2023, 10:38:29 pm
content: Silly Arrow. You should always connect the feedback to the + pin!

author: temperance
author_rank: Super Contributor
timestamp: October 12, 2023, 11:39:54 pm
content: In our school for higher education we had a docent claiming that in an inverting amplifier all currents magically disappears into the inverting input because the other terminal is held at 0 V. So he consistently drew current arrows around such an amplifier pointing towards the inverting input.

author: thm_w
author_rank: Super Contributor
timestamp: October 13, 2023, 12:31:54 am
content: Why the hell are Vs and Ve used to label the input and output? Why not Vin and Vout..Super confusing.

author: newbrain
author_rank: Super Contributor
timestamp: October 13, 2023, 08:17:06 am
content: Quote from: thm_w on October 13, 2023, 12:31:54 amProbably from Frenchentréeandsortie.English is not the only language of this world, luckily.This does not diminish or excuse the idiotic blunder.

author: Kleinstein
author_rank: Super Contributor
timestamp: October 13, 2023, 09:53:53 am
content: At least they did not connect the supply - so it may actually work in some cases.

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: October 13, 2023, 10:26:31 am
content: Quote from: newbrain on October 13, 2023, 08:17:06 amThe author apparently is a french marketing manager.Let's hope he is better at marketing for Arrow's sake.

author: SiliconWizard
author_rank: Super Contributor
timestamp: October 13, 2023, 07:16:52 pm
content: Funnily, the example that follows with a resistive divider followed by an opamp buffer is correct, and the rest of the schematics in the article look correct as well.So it's unclear what happened here.

author: TimFox
author_rank: Super Contributor
timestamp: October 13, 2023, 10:18:31 pm
content: Quote from: newbrain on October 13, 2023, 08:17:06 amNot to be confused with (English) "source" and "exit".

author: AlbertL
author_rank: Regular Contributor
timestamp: October 14, 2023, 04:56:01 pm
content: I remember an industrial products web site that had potentiometers listed under "Switches", in a sub-category titled "Variable-Output Switches".

author: Warhawk
author_rank: Frequent Contributor
timestamp: October 14, 2023, 05:35:24 pm
content: Quote from: temperance on October 12, 2023, 11:39:54 pmThat's why he is a docent and not doing anything remotely close to practical engineering.

author: The Soulman
author_rank: Super Contributor
timestamp: October 14, 2023, 06:15:08 pm
content: Quote from: tszaboo on October 12, 2023, 10:38:29 pmYeah, should send them a email with some negative feedback.