Teaching Electric Circuit Theory with the Help of Tutorial Software

Electric Circuit Theory (ECT) has been a fundamental component of the teaching of electrical engineering since the dawn of university electrical engineering studies at the beginning of this century. In reflection of developments in the USA it was later introduced as an independent subject in most faculties of electrical engineering. Highly developed and deeply considered methods of pedagogical presentation, including excellent textbooks, examples and other teaching aids, have emerged in the long-term development of this field of science.

There is clearly an important role for contemporary computer science in the teaching of technical disciplines, including ECT, but this does not simply suggest an improvement of hitherto used teaching methods: in many instances it is necessary to rebuild these methods from the ground up. In fact it could be observed that the existence of a well developed classic pedagogical system in the teaching of ECT, one that has proven with time to be effective, and the necessity to undergo a revolutionary conversion of this system in order to adopt a modern computer-based teaching technology might be factors in the fairly slow introduction of computer-aided teaching in this discipline. The same situation can be found in other theoretical disciplines of electrical engineering.

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XR-C440/C450 Service Manual

Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 C during repairing.
• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering or unsoldering .

Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.

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