Op-Amps: The Golden Rules (Op-Amp Basics, episode 1)

Описание: Introducing the operational amplifier (or op-amp for short), and studying its properties (gain; input and output impedances), with a little side trip into electronic history.

0:00 Intro
0:32 What's an op-amp?
3:34 Feedback: some history
6:18 The Golden Rules
8:20 The op-amp follower
9:24 Input resistance
10:52 Input capacitance
12:52 Output impedance
14:58 Summary

CREDITS

Music:

“Light Sting” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/b...

Images:

"1900 Bell System logo"
AT&T, Public domain, via Wikimedia Commons
https://commons.wikimedia.org/wiki/Fi...

"Yay for technology!" © 2009 Jelene Morris
CC-BY-2.0 https://creativecommons.org/licenses/...
https://www.flickr.com/photos/jelene/...

"AT&T Type 3A carbon telephone repeater cartridge 1919"
Bancroft Gherardi, Frank B. Jewett, Public domain, via Wikimedia Commons
https://commons.wikimedia.org/wiki/
File:AT%26T_Type_3A_carbon_telephone_repeater_cartridge_1919.jpg

"Shreeve carbon telephone repeaters AT&T Providence, RI 1919"
Bancroft Gherardi and Frank B. Jewett, Public domain, via Wikimedia Commons
https://commons.wikimedia.org/wiki/
File:Shreeve_carbon_telephone_repeaters_AT%26T_Providence_RI_1919.jpg

"Early Audion telephone repeaters"
Bancroft Gherardi, Public domain, via Wikimedia Commons
https://commons.wikimedia.org/wiki/
File:Early_Audion_telephone_repeaters.jpg

'The longest "long distance" in the world'
Stockton (Calif.) Evening Record, January 26, 1915
Public domain.

"Route Selection and Cable Laying"
Bell System Technical Journal 36:1, January, 1957, p.296
https://archive.org/details/bellvol36...

"Harold Stephen Black"
Photo courtesy of National Inventors' Hall of Fame
Used by permission.

"Erie Lackawanna Ferry Pocono on the Hudson River"
Wikimedia user 'railfan 44'
Public domain, via Wikimedia Commons
https://commons.wikimedia.org/wiki/
File:Erie_Lackawanna_passenger_ferry_POCONO_on_the_Hudson_River_(26161704023).jpg

"Light Bulb or Idea Flat Icon Vector"
https://commons.wikimedia.org/wiki/
File:Light_Bulb_or_Idea_Flat_Icon_Vector.svg
Videoplasty.com, CC BY-SA 4.0 https://creativecommons.org/licenses/...,
via Wikimedia Commons

Harold S. Black
Unpublished notes on feedback amplifiers, August, 1927
Public domain.
Photo courtesy of IEEE Industrial Electronics

Harold S. Black
"Wave translation system." US patent 2,102,671 (21 December 1937).

"Woman scolding dog (dark skin vers)"
OpenClipArt user 'hund'
CC0, https://creativecommons.org/publicdom...
https://openclipart.org/detail/329940...

"Air Traffic Controller Maintains Safe, Orderly Flow of Air Traffic
Using Radio Waves to Determine Range"
Designed by Wannapik
https://www.wannapik.com/vectors/12267

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© 2025 Kevin B. Kenny
CC-BY-SA 4.0 https://creativecommons.org/licenses/...