Amplificador transistorizado para uso em instrumentação científica

Abstract

This project consists of the design and assembly of an amplifier circuit to work as part of a Langmuir probe that will be used at the university environment for the study and characterization of plasmas. Simulations were performed, at first, considering a commercial circuit topology used in audio amplifiers. Different versions of the printed circuit board were developed, always aiming at improvements on routing, components placement and performance of the circuit as a whole. The project reached the expectations like frequency response, slew-rate, output voltage and closed loop gain. All that at a low cost and bearing the potential to be used as part of future projects developed at the university.