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When a stepped-voltage pulse is applied to the input of a transistor, the curve of the output current as a function of time will show deviations from the rectangular form. Discusses the rise-time TR and...
Considers a P-N-P crystal having a wide central region. The concentration graphs for this crystal are given and it is seen how the application of a forward voltage at one of the P-N junctions, and a reverse...
The four states of operation of a transistor that occur in switching applications are examined. If both junctions are biased in the reverse direction the transistor operates in the cut-off state. The normal...
The application of a square wave voltage pulse to a diode creates a current pulse of a complex form which is difficult to interpret. However, by utilising the concentration graphs, the film gives an...
Part 1 explains the Lorentz force by considering a free-moving positively charged particle in a uniform magnetic field and the ‘right-hand’ screw is defined. The helical motion resulting from the...
The story of magnetism. Illustrates the ways in which scientists found that magnetism existed and how, through research, industry has revealed more of the nature of this force. Discusses the development and...
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