Circuit Bending

Introduction

In addition to turning sounds on and off, you can also use the CMOS Hex Inverter (4049) chip to make things louder. A preamp will boost a low-level signal. A preamp has five basic components:
  • The CMOS Hex Inverter (4049)
  • The input resistor (10kΩ)
  • Feedback resistor (larger than input resistor)
  • Input capacitor (.1µF)
  • Output capacitor (10µF)