Gerador de campo elétrico senoidal de alta frequência

Abstract

With the growing population of the world there is a need for larger and faster food production, so that this is possible researchers have, in recent years, studies in search of new methods and technologies to have a bigger and faster production. without causing damage to the environment. One such researcher is the Russian Alexander Mishin who suggested using high frequency stationary electric fields for use in agriculture and even to treat people. Starting from the pancake Tesla coil, he created a different coil shape. The Mishin coil must be fed by a sinusoidal current at its resonant frequency. For example, when the coil is fed and placed close to grains for a certain time, there is an acceleration in germination and growth. Former student of the Electrical Engineering Course at the University of Passo Fundo, Gabriel Bortolanza in his TCC created a prototype based on the use of the Mishin coil. The disadvantage of using the Mishin coil is the use of a current passing through the coil, thus generating an electromagnetic field. Recently by Mishin himself, a proposal was made to use the single-wire Tesla coil from a high frequency and high voltage sine signal generator. The objective of this work is to create a high frequency and high voltage sine signal generator that will feed a Tesla Coil through a half bridge inverter circuit at its automatically adjusted resonant frequency. The generator has the option of two high frequency signal modulations, one with higher frequencies (up to hundreds of Hz) and one with lower frequencies (up to tens of Hz), and also displays important information such as voltage present in the coil and the oscillation and modulation frequencies, being the prototype control done through a microcontroller.