它可以定量研究可控的高真空管。可以记录三极管特性，确定电荷的负极性和产生阴极射线（作为“电子枪”的模型）。还可以研究三极管的技术应用，如作为放大器和振荡器（带有赫尔姆霍茨线圈U18505）。 阴极灯丝电压：Uh < 7,5 V / Ih < 3 A 阳极电压： Ua < 300 V 阳极电流：通常在 Uh = 7,5 V, Ua = 300 V时， Ia = 1,4 mA 栅极电压：-300 V < Ug < 300 V 栅极电流：通常在Uh = 7.5 V, Ua = 300 V 时， Ig = 0.9 mA 另外需要： U18500 试管固定器 U210501 500V直流电源组件
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