Welcome to the video series The Operational Amplifier - From Abstraction to Reality.
This video describes how to bias an op amp to operate on a single power supply. For symmetric dynamic range of an AC amplifier without dual supplies, an artificial ground or middle bias source must be developed. The concept of bias injection is explored along with the effect of the cutoff frequency of multiple capacitively coupled networks on the overall frequency response.
Download the applicable spreadsheet:
github.com/oldhackEE/Electric...
00:00 Intro
00:18 Dual Supplies for Op Amps and It's Advantages
01:01 Typical Single Supply Sources
01:31 Single Supplies for Op Amps
02:16 Capacitor Coupling of AC Signals and Bias Injection
03:28 Middle Voltage Bias
05:32 AC Coupled Amplifiers
06:11 Non-Inverting AC Coupled Amplifier
08:29 Cascaded Response
10:28 Individual Stage Responses vs. Cascaded Response
11:21 Inverting AC Coupled Amplifier
12:50 Turn-On Time Issues
13:20 Remove Bias From Output
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