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https://www.patreon.com/TheAudioPhool
Operational amplifiers (op-amps) have imperfections! Things like input offset voltage, input offset currents, input bias currents etc. We are making a sawtooth core voltage controlled ocillator (VCO) in this video, which requires us to use an op-amp integrator, and deal with all the imperfections that comes with it! We'll use a trusty JFET to reset the integrator, all controlled by a simple op-amp comparator circuit. Enjoy! :)
Patron Video: https://www.patreon.com/posts/69237421?utm_campaign=postshare_fan
Schematic: https://drive.google.com/file/d/1Qwm4p9KCwYcqObaNLULBqIi-cLS_ul62/view?usp=sharing
00:00 Intro
00:16 Oscillator Core
00:55 Op-Amp Integrator
1:50 Drift
2:12 Input Offset Voltage
3:49 Resetting The Integrator
5:05 Op-Amp Comparator
6:20 Comparator Hysteresis
7:50 Charge Injection
8:24 Signal Conditioning
9:20 Oscillation Frequency
10:10 Linear vs Exponential Control Voltage