2 layers43.8 × 31.1 mm

OpAmp
AleDedor/Discrete_OpAmp
A Single Ended Operational Amplifier mainly made with bipolar technology and a NMOS differential pair, two amplification stages and a Class AB output stage.
23 parts1
Open-source boards designed in KiCad by AleDedor on GitHub, from 2 repositories. A board’s address here is its repository’s there.

AleDedor/Discrete_OpAmp
A Single Ended Operational Amplifier mainly made with bipolar technology and a NMOS differential pair, two amplification stages and a Class AB output stage.

AleDedor/Dummy-Audio-amplifier
A very basic, 2-stages, audio amplifier, designed with discrete THT components.