Confused about Op Amps?
Worried about an upcoming exam, quiz or test?
This presentation shows you how to solve most types of op amp problems! No previous understanding of Op Amps is required or needed.
If, after this presentation, you become curious about how Negative Feedback really works and how it turns Op Amps into Amplifiers, go to our follow up video that contains a jargon-free explanation of these topics:
https://www.youtube.com/watch?v=mijIZx7LXZI
00:00:00 Introduction
00:01:26 Magical Property #1: The Output Voltage Source
00:06:32 The Magical Output Voltage Equations
00:09:08 Solving Basic Problems using the Magical Voltage Source
00:17:12 Tricking us by drawing the circuits differently
00:20:00 Magical Property #2: Infinite Input Resistance
00:24:00 The “Trick Resistor” trick
00:30:40 The “Trick Resistor” gets tricky for inverting amplifier
00:35:00 Solving Problems with Cascaded Op Amps
00:39:06 The “Resistor Network” trick
00:46:30 The “Voltage Divider” Input trick
00:49:20 Getting Stuck on a tough problem
00:51:18 Magical Property #3: Virtual Short Circuit
00:54:18 Solving basic problems with Virtual Short Circuit
01:00:05 Solving Complex problems using Virtual Short Circuit
01:07:08 The “Range” tricks using Supply Voltages
01:10:27 Have we learnt anything?