一种初学易用的反馈性质判定的方法——极性判定法

An Easy Approach for Beginners to Judge the Nature of Feedback——the Polarity Method

反馈作为电子技术的一种十分重要的技术,其反馈性质的判断在传统上使用瞬时极性法来完成。瞬时极性法对于初学者而言,直观性稍弱,因而不够简便易用。经教学提炼出瞬时极性法的修正案,力图使反馈性质的判定更加简便易用,帮助初学者尽快掌握反馈性质的判定。这种简易的判定方法定义为极性判定法。极性判定法在立足于瞬时极性法的基础上,将其变得直观而易学,经教学实践检验,效果明显。

Feedback is a kind of technique of utmost importance in the electronic technology. The judgment of its nature was traditionally completed by adopting the approach of instantaneous polarity. For beginners, the visualization of instantaneous polarity method is slightly weak and therefore not so simple and easy to use. The writer of the paper has refined the amendment of instantaneous polarity method through his teaching experience in an attempt to make the judgment of the nature of feedback easier and more convenient and help beginners master it more quickly. The writer defines this easy judgment approach as polarity method. Based on the approach of instantaneous polarity method, polarity is made intuitional and easy to learn and its effect is evident through the examination of teaching practice.