O cenário
Design a piezo pickup preamp for a contact microphone that requires high impedance and gain.
O que há neste desenho
Entenda as decisões por trás dele.
01
Using a JFET for high input impedance
02
High-pass filter to reduce low-frequency rumble
03
Source bypass capacitor to increase gain
General preamp for piezo sensors needing high impedance buffering and simple amplification.