DIY VCO - Shaping Sawtooth to Square

This episode teaches how to extend a breadboard analog VCO with thermistor-based temperature stabilization, fine tuning, sawtooth-to-pulse waveshaping, and 10V peak-to-peak outputs. It explains the relevant voltage-divider, transistor, and op-amp circuits as they are built and tested.

Syllabus

Intro
Temperature Trouble
Thermistors Basics/Taming Transistors
Temperature Dependent Voltage Divider
Thermistor Setup
Fine Tuning Intro
Weighted Voltage Divider Inputs
Fine Tuning Setup
Waveshaping Intro
40106 Sawtooth-to-Pulse
Op-Amp Basics
Op-Amp Maths
Op-Amp Negative Feedback
Non-Inverting Amplifier
Amplifier Setup
Amplifier Function Test
40106 Sawtooth-to-Pulse II
Sawtooth-to-Pulse Setup & Test
Amplifier Range Fix
Amplifier Range Fix Setup & Test
Offset Voltage Removal
Volume: 10V Peak-to-Peak
10V Peak-to-Peak Setup
Sound Demo
Outro