INVERTER SYSTEM FLUORESCENT LAMP FOR STUDY TEACHING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a teaching material which makes a learner recognize roles of constituting components and the principle of the inverter circuit with vision. SOLUTION: This teaching material is characterized by being provided with an oscillation electronic circuit capable of varying a lighting frequency and is configured so that a transistor is switched by the output signal of the oscillation electronic circuit and the current of the transistor is connected to the primary side of a boosting transformer. Moreover, the teaching material is equipped with configuration in which a commercial fluorescent tube can be connected to the secondary side of the transformer. The teaching material is characterized in that a lighting frequency can be set from several Hz to several hundreds Hz by a learner in order to make the learner' vision recognize interval of lighting and turning off. The teaching material is configured so that the learner can remove the part of the oscillation circuit and the learner can the change the operation of the teaching material to a manual operation. The oneself of the learner can control a time interval of ON/OFF with a switch by manual operation. The teaching material can make the leaner understand the principle of the inverter circuit from the correlation between the action of the learner's hand and luminescence of the fluorescent tube by vision. COPYRIGHT: (C)2005,JPO&NCIPI